CN109635403B - Railway fastening elastic rod is broken splashing Risk Forecast Method and device - Google Patents
Railway fastening elastic rod is broken splashing Risk Forecast Method and device Download PDFInfo
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- CN109635403B CN109635403B CN201811476829.3A CN201811476829A CN109635403B CN 109635403 B CN109635403 B CN 109635403B CN 201811476829 A CN201811476829 A CN 201811476829A CN 109635403 B CN109635403 B CN 109635403B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
- E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/32—Fastening on steel sleepers with clamp members
- E01B9/34—Fastening on steel sleepers with clamp members by resilient steel clips
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E01B9/44—Fastening the rail on the tie-plate
- E01B9/46—Fastening the rail on the tie-plate by clamps
- E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
- E01B9/483—Fastening the rail on the tie-plate by clamps by resilient steel clips the clip being a shaped bar
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- Architecture (AREA)
- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Computer Hardware Design (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of railway fastening elastic rod fracture splashing Risk Forecast Method provided in an embodiment of the present invention and device, it is related to traffic safety technology field, this method is by establishing three-dimensional non-linear finite element model and being set to service state, resettle the coupled room simulation model of vehicle Yu the rail, the dynamic response data when wave mill situation occurs in rail between vehicle and rail is obtained according to the coupled room simulation model, then three-dimensional non-linear finite element model is input to using dynamic response data as excitation, obtain the fracture splashing risk data of spring, splashing track can be simulated according to according to the fracture splashing risk data, so can be predicted according to the fracture splashing risk data of spring the splashing risk of spring, to obtain risk profile result, and then realize that the more comprehensive protection of progress of splashing is broken to spring to be arranged It applies, guarantees the safety traffic of train during operation.
Description
Technical field
The present invention relates to traffic safety technology fields, are broken splashing risk in particular to a kind of railway fastening elastic rod
Prediction technique and device.
Background technique
Rail corrugation refers to rail after putting into operation, and there is the abrasions of the periodicity of certain rule on Rail Surface
A kind of wavy abrasion of approximation generated with plastic deformation in the working surface of rail, currently, subway fortune throughout the country
In battalion, the spring breakage phenomenon that rail corrugation causes occurs again and again, especially splashes behind sharp radius curve location, spring fracture
After can cause some security risk problems therewith, such as spring fracture splash after can hit vehicle window safety problem, just to train
Often operation brings threat.
In the prior art, the understanding splashed to spring fracture is abundant not enough, and comes pair generally by engineering experience
Spring fracture, which is splashed, carries out safety prevention measure, thus cannot achieve spring can be broken splash after the safety problem that causes into
The more comprehensive safeguard procedures of row, it is difficult to guarantee the safety of train operation.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of railway fastening elastic rod fracture splashing risk profile side
Method and device, to improve the above problem.
In a first aspect, the embodiment of the invention provides a kind of railway fastening elastic rods to be broken splashing Risk Forecast Method, it is described
Method includes: to establish three-dimensional non-linear finite element model, and the three-dimensional non-linear finite element model is to carry out group to rail fastener
The solid finite meta-model formed after dress, the rail fastener include rail, spring, gauge block, elastic rubber pad and iron chair；
Service state is set by the solid finite meta-model, the service state, which refers to generate between the spring and the rail, to be buckled
Pressure；Establish the coupled room simulation model of vehicle Yu the rail；According to the coupled room simulation model, obtain described
There is dynamic response data when wave mill situation between the vehicle and the rail in rail, and the dynamic response data includes steel
Rail fastener power, rail dynamic displacement, rail vibration acceleration；The three-dimensional is input to using the dynamic response data as excitation
Nonlinear finite element model obtains the fracture splashing risk data of the spring；According to the fracture splashing risk number of the spring
It is predicted according to the splashing risk to the spring, and obtains risk profile result.
During above-mentioned realization, three-dimensional non-linear finite element model is established, three-dimensional non-linear finite element model is pair
The solid finite meta-model that rail fastener is formed after being assembled, all parts including rail fastener guarantee three dimensional non-linear
The integrality of finite element model, it is subsequent set service state for the solid finite meta-model can be more comprehensively to wherein
Stress analyzed, the coupled room simulation model for establishing vehicle and rail can obtain the vehicle and institute when wave mill situation
The dynamic response data between rail is stated, guarantees the time of day for simulating wave mill situation, and obtain dynamic response number at this time
According to herein the dynamic response data obtained is the value close with truth, and dynamic response data is used to be input to institute as excitation
The fracture splashing risk data of spring can be obtained by stating three-dimensional non-linear finite element model, so as to be flown according to the fracture of spring
It splashes risk data to predict the splashing risk of the spring, then obtains risk profile as a result, in turn can be according to prediction
As a result prevent the safety problem that the fracture splashing of spring causes, finally can establish corresponding safeguard procedures, guaranteed train
Safety traffic.
Further, described to establish three-dimensional non-linear finite element model, comprising: to obtain the geometric attribute of the rail fastener
And physical attribute, the geometric attribute include sectional area, the moment of inertia, section factor, the physical attribute includes density of material, bullet
Property modulus and Poisson's ratio；The three dimensional non-linear for establishing the rail fastener according to the geometric attribute and the physical attribute is limited
Meta-model.
During above-mentioned realization, the three-dimensional non-linear finite element model is formed after assembling to rail fastener
Solid finite meta-model, rail fastener model therein are established according to actual building block, and according to actual railway
The geometric attribute and physical attribute of fastener, establish the rail fastener in three-dimensional non-linear finite element model, guarantee the three-dimensional established
Nonlinear finite element model is the model for being bonded truth, to make the accuracy for guaranteeing data in subsequent work.
Further, it is input to the three-dimensional non-linear finite element model using the dynamic response data as excitation, obtained
Obtain the fracture splashing risk data of the spring, comprising: be input to the railway button for the dynamic response data as excitation
The three-dimensional non-linear finite element model of part, generates the Stress Map of the rail fastener；According to the stress cloud of the rail fastener
Figure obtains the snap of the spring；Obtain the exercise data of the spring of the snap in fracture, the bullet
The exercise data of item is the fracture splashing risk data for characterizing the spring.
During above-mentioned realization, the three-dimensional non-linear finite element is input to using the dynamic response data as excitation
After model, the stress situation of three-dimensional non-linear finite element model spring in the case where the excitation is monitored, and generates corresponding iron
The Stress Map of road fastener, the snap of spring is obtained according to Stress Map, and obtains snap spring in fracture
The exercise data of exercise data, spring can be the fracture splashing risk data of characterization spring, then can be according to the disconnected of spring
It splits splashing risk data to predict the fracture splashing risk of spring, guarantees the accuracy of prediction result.
Further, the splashing risk of the spring is predicted according to the fracture splashing risk data of the spring,
And obtain risk profile result, comprising: the spring is obtained according to the fracture splashing risk data of the spring and is splashed in fracture
Velocity amplitude and angle value when original state；The velocity amplitude of splashing original state is broken according to the spring and the angle value obtains
Take the fracture splashing analogue data of the spring；It is splashed according to the fracture that the fracture splashing analogue data simulates the spring
Track；The splashing risk of the spring is judged based on the track, and obtains risk profile result.
During above-mentioned realization, the splashing risk of spring is carried out by the fracture splashing risk data of the spring of acquisition
It predicts and obtains risk profile result, it is ensured that the reliability and accuracy of risk profile result fly according to spring in fracture
The fracture splashing analogue data of motion capture spring when splashing original state, and then based on fracture splashing analogue data come mould
The track that the fracture of spring is splashed is drawn up, the splashing risk of spring is judged with this, accurate risk profile knot can also be obtained
Fruit.
Further, the fracture splashing analogue data includes the splashing maximum height of the spring and flying for the spring
Maximum distance is splashed, the fracture splashing analogue data of the spring is obtained according to the velocity amplitude and the angle value, comprising: be based onObtain the splashing maximum height of the spring；It is based onObtain the splashing maximum of the spring away from
From；Wherein, H is the splashing maximum height of the spring, and v is velocity amplitude of the spring when being broken splashing original state, and θ is
Angle value of the spring when being broken splashing original state, g are acceleration of gravity, and L is the splashing maximum distance of the spring.
During above-mentioned realization, the fracture splashing analogue data for obtaining spring is calculated based on kinematic formula, according to
The calculated analogue data of kinematics formula can carry out accurate analog simulation based on the data of acquisition, to guarantee to obtain
Get reliable risk profile result.
Second aspect, the embodiment of the invention provides a kind of railway fastening elastic rods to be broken splashing risk profile device, described
Device includes: that physical model establishes module, for establishing three-dimensional non-linear finite element model, the three-dimensional non-linear finite element mould
Type is the solid finite meta-model formed after assembling to rail fastener, and the rail fastener includes rail, spring, gauge gear
Block, elastic rubber pad and iron chair；State setting module, it is described for setting service state for the solid finite meta-model
Service state, which refers to, generates buckle press between the spring and the rail；Building of Simulation Model module, for establishing vehicle and institute
State the coupled room simulation model of rail；Dynamic response analysis module, for obtaining according to the coupled room simulation model
There is dynamic response data when wave mill situation between the vehicle and the rail, the dynamic response data packet in the rail
Include rail fastening power, rail dynamic displacement, rail vibration acceleration；Risk data obtains module, is used for the dynamic response
Data are input to the three-dimensional non-linear finite element model as excitation, obtain the fracture splashing risk data of the spring；Wind
Dangerous prediction module, for being predicted according to the fracture splashing risk data of the spring the splashing risk of the spring, and
Obtain risk profile result.
Further, it includes: attribute acquiring unit that the physical model, which establishes module, for obtaining the rail fastener
Geometric attribute and physical attribute, the geometric attribute include sectional area, the moment of inertia, section factor, and the physical attribute includes material
Expect density, elasticity modulus and Poisson's ratio；Model foundation unit, for establishing institute according to the geometric attribute and the physical attribute
State the three-dimensional non-linear finite element model of rail fastener.
Further, it includes: Stress Map generation unit that the risk data, which obtains module, is used for the dynamic response
Data are input to the three-dimensional non-linear finite element model of the rail fastener as excitation, generate the stress cloud of the rail fastener
Figure；Stress Map analytical unit, for obtaining the snap of the spring according to the Stress Map of the rail fastener；Movement
Data capture unit, for obtaining the exercise data of the spring of the snap in fracture, the movement of the spring
Data are the fracture splashing risk data for characterizing the spring.
Further, the risk profile module includes: primary data acquiring unit, for the fracture according to the spring
Splashing risk data obtains velocity amplitude and angle value of the spring when being broken splashing original state；Analogue data obtains single
Member, for obtaining the fracture splashing analogue data of the spring according to the velocity amplitude and the angle value；Analogue unit is used for
The fracture splashing track of the spring is simulated according to the fracture splashing analogue data；Risk profile result unit, for being based on
The track judges the splashing risk of the spring, and obtains risk profile result.
Further, the fracture splashing analogue data includes the splashing maximum height of the spring and flying for the spring
Maximum distance is splashed, the analogue data acquiring unit includes: the first data acquisition subelement, for being based onIt obtains
Obtain the splashing maximum height of the spring；Second data acquisition subelement, for being based onObtain the spring
Splashing maximum distance；Wherein, H is the splashing maximum height of the spring, and v is the spring when being broken splashing original state
Initial velocity, θ are the drift angle in initial motion direction and vertical direction of the spring when being broken splashing original state, and g is gravity
Acceleration, L are the splashing maximum distance of the spring.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, including processor and memory, the memory
It is stored with computer-readable instruction fetch, when the computer-readable instruction fetch is executed by the processor, operation such as above-mentioned the
On the one hand the step in the method provided.
Fourth aspect, the embodiment of the present invention provide a kind of readable storage medium storing program for executing, are stored thereon with computer program, the meter
The step in the method that first aspect offer is as above provided is run when calculation machine program is executed by processor.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that by implementing understanding of the embodiment of the present invention.The objectives and other advantages of the invention can be by written theory
Specifically noted structure is achieved and obtained in bright book, claims and attached drawing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural block diagram of a kind of electronic equipment provided in an embodiment of the present invention；
Fig. 2 is the flow chart that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing Risk Forecast Method；
Fig. 3 is rail vertical deviation schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 4 is Rail Lateral Displacement schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 5 is fastener vertical force schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 6 is fastener cross force schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 7 is rail Vertical Acceleration schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 8 is rail lateral vibration acceleration schematic diagram in a kind of dynamic response data provided in an embodiment of the present invention；
Fig. 9 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing Risk Forecast Method step S150's
Flow chart；
Figure 10 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing Risk Forecast Method step S160
Flow chart；
Figure 11 is that a kind of spring provided in an embodiment of the present invention is broken splashing original state schematic diagram；
Figure 12 is that a kind of spring provided in an embodiment of the present invention is broken splashing trace simulation schematic diagram；
Figure 13 is the structure that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing risk profile device
Block diagram.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Fig. 1 is please referred to, Fig. 1 shows a kind of structural block diagram of electronic equipment 10 that can be applied in the embodiment of the present application.
Electronic equipment 10 may include railway fastening elastic rod fracture splashing risk profile device 100, memory 101, storage control
102, processor 103, Peripheral Interface 104, input-output unit 105, audio unit 106, display unit 107.
The memory 101, storage control 102, processor 103, Peripheral Interface 104, input-output unit 105, sound
Frequency unit 106, each element of display unit 107 are directly or indirectly electrically connected between each other, to realize the transmission or friendship of data
Mutually.It is electrically connected for example, these elements can be realized between each other by one or more communication bus or signal wire.Rail fastener
Spring fracture splashing risk profile device 100 includes that at least one can be stored in the form of software or firmware (firmware)
In reservoir 101 or be solidificated in railway fastening elastic rod fracture splashing risk profile device 100 operating system (operating
System, OS) in software function module.Processor 103 is used to execute the executable module stored in memory 101, such as
The software function module or computer program that railway fastening elastic rod fracture splashing risk profile device 100 includes.
Wherein, memory 101 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Wherein, memory 101 is for storing program, and processor 103 executes program, the aforementioned present invention is real after receiving and executing instruction
Applying method performed by the server that the stream process that an any embodiment discloses defines can be applied in processor 103, or
It is realized by processor 103.
Processor 103 can be a kind of IC chip, the processing capacity with signal.Above-mentioned processor 103 can
To be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit
(Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), specific integrated circuit (ASIC),
Ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hard
Part component.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor
It can be microprocessor or the processor 103 be also possible to any conventional processor etc..
Various input/output devices are couple processor 103 and memory 101 by Peripheral Interface 104.In some implementations
In example, Peripheral Interface 104, processor 103 and storage control 102 can be realized in one single chip.In some other reality
In example, they can be realized by independent chip respectively.
Input-output unit 105 is used to be supplied to the friendship that user input data realizes user and server (or local terminal)
Mutually.Input-output unit 105 may be, but not limited to, mouse and keyboard etc..
Audio unit 106 provides a user audio interface, may include one or more microphones, one or more raises
Sound device and voicefrequency circuit.
Display unit 107 provided between electronic equipment 10 and user an interactive interface (such as user interface) or
It is referred to for display image data to user.In this example it is shown that unit 107 can be liquid crystal display or touch-control is shown
Device.It can be the capacitance type touch control screen or resistance type touch control screen etc. of support single-point and multi-point touch operation if touch control display.
Single-point and multi-point touch operation is supported to refer to that touch control display can sense one or more positions on the touch control display
Place while the touch control operation generated, and the touch control operation that this is sensed transfers to processor 103 to be calculated and handled.
Various input/output devices are couple processor 103 and memory 101 by Peripheral Interface 104.In some implementations
In example, Peripheral Interface 104, processor 103 and storage control 102 can be realized in one single chip.In some other reality
In example, they can be realized by independent chip respectively.
Input-output unit 105 is used to be supplied to the interaction that user input data realizes user and processing terminal.It inputs defeated
Unit 105 may be, but not limited to, out, mouse and keyboard etc..
It is appreciated that structure shown in FIG. 1 is only to illustrate, electronic equipment 10 may also include it is more than shown in Fig. 1 or
Less component, or with the configuration different from shown in Fig. 1.Each component shown in Fig. 1 can using hardware, software or its
Combination is realized.
Fig. 2 is please referred to, Fig. 2 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing Risk Forecast Method
Flow chart, this method comprises the following steps:
Step S110: three-dimensional non-linear finite element model is established.
Three-dimensional non-linear finite element model is the solid finite meta-model formed after assembling to rail fastener, railway button
Part includes rail, spring, gauge block, elastic rubber pad and iron chair.
The three-dimensional non-linear finite element model of foundation includes each critical component in rail fastener, it may for example comprise rail,
Spring, gauge block, elastic rubber pad, iron chair etc., according to rail fastener actual size, the three dimensional non-linear for establishing former ratio has
Meta-model is limited, there can be higher reduction degree.Wherein it is possible to using modeling (Unigraphics, UG) software according to rail fastener
Each key position sets up the three-dimensional non-linear finite element model of former ratio, is then introduced into finite element analysis software
The material at each position of rail fastener in three-dimensional non-linear finite element model is arranged in (ansys machanical APDL, ANSYS)
Parameter simultaneously assembles each component.
Wherein, the process of three-dimensional non-linear finite element model is established are as follows: obtain the geometric attribute and physics category of rail fastener
Property, geometric attribute include sectional area, the moment of inertia, section factor, and physical attribute includes density of material, elasticity modulus and Poisson's ratio,
Then the three-dimensional non-linear finite element model of rail fastener is established according to geometric attribute and physical attribute.
Specifically, the geometric attribute of rail fastener is established space curve by each key point in spring line style and is rotated into
Body carries out process of refinement for the irregular part of spring in rail fastener, and the physical attribute of rail fastener mainly considers bullet
The parameters such as strip material density, elasticity modulus, Poisson's ratio.According to the technique of the characteristic of spring material and processing, fastening elastic rod is considered
Nonlinear deformation under working environment, i.e. elastic-plastic deformation, in addition, the constitutive relation of spring is using ideal double in rail fastener
Linear strain-hardening elastic-plastic model.It can establish one by obtaining the geometric attribute of rail fastener and physical attribute in actual conditions
Complete model, thus the available accurate data in subsequent method, and then can be realized to rail fastener damage into
Row accurately identification.
For example, by taking DT-III type railway fastener common in subway as an example, according to rail fastener in UG modeling software
Critical component establishes solid finite meta-model, and wherein rail length takes half 0.3 meter of across fastener spacing, then UG modeling software is built
Vertical solid finite meta-model is directed into ANSYS software, and each part material parameter is arranged and fills each position
Match, wherein type III spring material uses 60Si2MnA according to national standard (GB/T1222.2016 " spring steel "), surrender is strong
Degree is 1375MPa, ultimate strength 1570MPa；Rail material uses structural steel, and gauge block material is glass fiber reinforced polyester
Amide 66, elastic rubber pad material use thermoplastic polyester elastomer (Thermoplastic Copplyesters, TPEE), iron pad
Plate material uses QT450-10 (spheroidal graphite cast-iron), and detailed mechanics parameter is as shown in table 1.
The mechanics parameter table of each component materials of 1 rail fastener of table
During above-mentioned realization, three-dimensional non-linear finite element model is the entity formed after assembling to rail fastener
Finite element model, rail fastener model therein are established according to actual building block, and according to actual rail fastener
Geometric attribute and physical attribute, establish the rail fastener in three-dimensional non-linear finite element model, guarantee establish three-dimensional it is non-thread
Property finite element model be bonded truth model.
Specifically, step S110 is comprised the following steps that
The geometric attribute and physical attribute of the rail fastener are obtained, the geometric attribute includes sectional area, the moment of inertia, cuts
Face coefficient, the physical attribute include density of material, elasticity modulus and Poisson's ratio.
The three-dimensional non-linear finite element model of the rail fastener is established according to the geometric attribute and the physical attribute.
During above-mentioned realization, the three-dimensional non-linear finite element model is formed after assembling to rail fastener
Solid finite meta-model, rail fastener model therein are established according to actual building block, and according to actual railway
The geometric attribute and physical attribute of fastener, establish the rail fastener in three-dimensional non-linear finite element model, guarantee the three-dimensional established
Nonlinear finite element model is the model for being bonded truth, to make the accuracy for guaranteeing data in subsequent work.
Step S120: setting service state for the solid finite meta-model, the service state refer to the spring with
Buckle press is generated between the rail.
Service state is set by solid finite meta-model, that is to say, that makes to generate between spring and rail in rail fastener
There is buckle press, in the mounted state, one end of spring is fixed on iron chair wound to rail fastener, and the other end of spring is pressed in rail
On, pass through rail fastening for the connection and fixation of rail and sleeper to realize.
For example, setting surface-to-surface CONTACT WITH FRICTION in ANSYS finite element software for each critical component of rail fastener, that is, adopting
With Non-linear contact theory, Contact Algorithm uses augmentation Lagrangian Arithmetic, contacts the friction between and motion state root
It is determined according to Coulomb friction model, contact relation is as shown in table 2 below.Staff cultivation is set as to iron chair two side portions bottom surface, by iron
Backing plate middle section applies displacement load vertically upward and is lifted, and iron chair middle section is made to reach same with two side portions
Horizontal plane can carry out static analysis to rail fastener, evaluate spring to simulate type III non-bolt fastening elastic rod installation condition
Stress state under standard installation condition.
Static analysis is carried out to rail fastener, displacement load is applied to the middle section of iron chair vertically upward, can be seen
Journey is played to apply to spring, so that spring, which is in, withholds state, for example, being lifted iron chair middle section 11mm herein, at this time
Spring bullet journey is 11.2mm, elastic-strip pressure 11.7kN, and wherein fastening elastic rod maximum stress is 1437.2MPa, can be obtained
The Stress Map of spring, it can be seen that when being not in spring to withhold state, spring heel end is blue, and limb in spring
Position is red, and when applying displacement load vertically upward to the middle section of iron chair, makes spring in when withholding state, from
It can be seen that spring heel end is red in Stress Map, and limb position is blue in spring, wherein blue indicates that stress is small, and it is red
Color table shows that stress is big.
Each component contact relationship setting of 2 rail fastener of table
Step S130: the coupled room simulation model of vehicle Yu the rail is established.
Step S140: according to the coupled room simulation model, the vehicle when wave mill situation occurs in the rail is obtained
Dynamic response data between the rail, the dynamic response data includes rail fastening power, rail dynamic displacement, steel
Rail vibration acceleration.
It establishes after the coupled room simulation model of vehicle and rail, wave mill is occurred according to the acquisition of coupled room simulation model
Dynamic response data when situation between vehicle and rail establish vehicle according to the case where actual operation route wherein can be
With the coupled room simulation model of rail, rail corrugation is then generated according to the state of track irregularity, can be got with this
The accurate data of the dynamic response of wheel rail system in the case of set between vehicle and track, dynamic response data include
Rail fastening power, rail dynamic displacement, rail vibration acceleration, these dynamic response datas can accurately reflect practical fortune
The dynamic response between wheel rail system in the case where battalion's route between vehicle and track, thus subsequent by dynamic response data
True spring stress situation can be obtained when being input to three-dimensional non-linear finite element model as excitation.
For example, according to the case where actual operation route in rigid multibody dynamics (Universal Mechanism, UM) software
The middle coupled room simulation model for establishing vehicle and rail, vehicle parameter use subway B-type parameter, and speed designs speed per hour 120km/
h.Track line style is straightway 50m-easement curve 115m-circular curve 450m-easement curve 115m-straightway 50m, rail
It is 40mm, depth of convolution 0.1mm that wave, which grinds wavelength, then passes through the analysis of UM software and dynamic response data is calculated, main to wrap
Include rail fastening power, rail dynamic displacement, rail vibration acceleration.Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are please referred to, therefrom
It can be seen that the available dynamic response data of model that UM software is established, the vertical maximum displacement of rail is 0.58mm, rail
Vertical maximum displacement is 0.15mm, and fastener vertical force is up to 33kN, and fastener cross force is up to 6.7kN, rail vertical vibration
Acceleration maximum value is 2049m/s2, rail lateral vibration acceleration maximum value is 279m/s2, it is can be found that from these results
In rail corrugation, rail vibration acceleration is dramatically increased.
Step S150: it is input to the three-dimensional non-linear finite element model using the dynamic response data as excitation, is obtained
Obtain the fracture splashing risk data of the spring.
Obtained dynamic response data is input to three-dimensional non-linear finite element model as excitation, using display dynamics product
Point rail fastener stress state is calculated, rail fastener stress state and maximum stress position can be obtained, it can be with
Fastening elastic rod fracture position is obtained, is buckled for example, being input to as excitation obtained dynamic response data according to DT-III type
In the three-dimensional non-linear finite element model that part is established, the maximum stress portion of wherein spring can be analyzed by Dynamically Announce algorithm
Position is at A, and can obtain the position that the spring is broken also is at A, alternatively, can be analyzed by Dynamically Announce algorithm
Wherein the maximum stress position of spring is that A locates, and can obtain position that the spring is broken additionally may be used at B out
According to the fracture splashing risk data of analysis and calculating acquisition spring to rail fastener stress state.
Step S160: predicting the splashing risk of the spring according to the fracture splashing risk data of the spring,
And obtain risk profile result.
According to the fracture splashing risk data of spring, can the splashing risk to spring predict, then obtain risk
Prediction result.For example, the fracture splashing risk data of the spring of acquisition can be spring when being broken splashing original state
Exercise data, exercise data can have a bearing data and speed data, bearing data can for spring be broken splash when very
In short a period of time, the direction of motion of a part of motion profile of linear motion and the angle of horizontal direction can be considered as, such as
Spring can be considered as and move in a straight line in the 0.1s that fracture is splashed, and this direction is Due South, and the angle with horizontal direction is
30 °, the average speed of this time is 7m/s, then can be according to angle and average speed according to the fracture splashing track to spring
It is simulated, judges the fracture splashing track of the spring with the presence or absence of risk according to herein the case where, risk is then right if it exists
The risk makes corresponding safeguard procedures.
During above-mentioned realization, three-dimensional non-linear finite element model is established, three-dimensional non-linear finite element model is pair
The solid finite meta-model that rail fastener is formed after being assembled, all parts including rail fastener guarantee three dimensional non-linear
The integrality of finite element model, it is subsequent by solid finite meta-model be set as service state can more comprehensively to it is therein by
Power is analyzed, and the coupled room simulation model for establishing vehicle and rail can obtain when wave grinds situation between vehicle and rail
Dynamic response data guarantees the time of day for simulating wave mill situation, and obtains dynamic response data at this time, obtains herein
Dynamic response data is the value close with truth, and dynamic response data is used to be input to three-dimensional non-linear finite element as excitation
Model can obtain the fracture splashing risk data of spring, so as to the fracture splashing risk data according to spring to spring
Splashing risk is predicted that then available risk profile according to prediction result as a result, can prevent the fracture of spring in turn
The safety problem that splashing causes, finally can establish corresponding safeguard procedures, has guaranteed the safety traffic of train.
Fig. 9 is please referred to, Fig. 9 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing Risk Forecast Method
The flow chart of step S150 wherein includes the following steps: in step S150
Step S151: using the dynamic response data as excitation be input to the rail fastener three dimensional non-linear it is limited
Meta-model generates the Stress Map of the rail fastener.
After dynamic response data is input to the three-dimensional non-linear finite element model of rail fastener as excitation, it can analyze
The stress situation of spring is calculated, which can indicate by way of generating Stress Map, in Stress Map
The stress situation of spring can intuitively be found out by the color at each position, for example, in the spring Stress Map of generation,
Color at the A of position is blue, and the color at the B of position is red, and in spring Stress Map, and red indicates that stress is big, then
It can be seen that being the biggish place of stress for red position B.
Step S152: the snap of the spring is obtained according to the Stress Map of the rail fastener.
The snap of spring can be the biggish place of spring stress in Stress Map, for example, above-mentioned red expression is answered
Power is big, and the available position B for red is the biggish place of stress, then position B can be the snap of spring.
Step S153: the exercise data of the spring of the snap in fracture, the movement of the spring are obtained
Data are the fracture splashing risk data for characterizing the spring.
In spring fracture, the available exercise data being broken to spring when splashing, for example (,) it is available disconnected to spring
When splitting, the position A is sputtered, and the position A is splashed since stress can be 60 ° to C deflection angle value, and the initial velocity sputtered is
10m/s then angle value and initial velocity herein is the exercise data of spring, while also splashing for the fracture for characterizing spring
Risk data.
During above-mentioned realization, the three-dimensional non-linear finite element is input to using the dynamic response data as excitation
After model, the stress situation of three-dimensional non-linear finite element model spring in the case where the excitation is monitored, and generates corresponding iron
The Stress Map of road fastener, the snap of spring is obtained according to Stress Map, and obtains snap spring in fracture
The exercise data of exercise data, spring can be the fracture splashing risk data of characterization spring, then can be according to the disconnected of spring
It splits splashing risk data to predict the fracture splashing risk of spring, guarantees the accuracy of prediction result.
Figure 10 is please referred to, Figure 10 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing risk profile side
The flow chart of method step S160 wherein includes the following steps: in step S160
Step S161: the spring is obtained in fracture splashing original state according to the fracture splashing risk data of the spring
When velocity amplitude and angle value.
Step S162: the velocity amplitude of splashing original state is broken according to the spring and the angle value obtains the spring
Fracture splashing analogue data.
Being broken splashing analogue data includes the splashing maximum height of spring and the splashing maximum distance of spring, according to velocity amplitude
With the fracture splashing analogue data of angle value acquisition spring, may include:
It is based onObtain the splashing maximum height of spring；It is based onObtain the splashing of spring most
Big distance；Wherein, H is the splashing maximum height of spring, and v is velocity amplitude of the spring when being broken splashing original state, and θ is spring
Angle value when being broken splashing original state, g are acceleration of gravity, and L is the splashing maximum distance of spring.
During above-mentioned realization, the fracture splashing analogue data for obtaining spring is calculated based on kinematic formula, according to
The calculated analogue data of kinematics formula can carry out accurate analog simulation based on the data of acquisition, to guarantee to obtain
Get reliable risk profile result
Step S163: the track that the fracture of the spring is splashed is simulated according to the fracture splashing analogue data.
Step S164: the splashing risk of the spring is judged based on the track, and obtains risk profile result.
Fracture splashing risk data by the spring got obtains the spring for needing to use in fracture splashing original state
When velocity amplitude and angle value, subsequent analogue data can be obtained by analyzing and calculating, then be splashed simulation by fracture
The track that the fracture of spring described in digital simulation is splashed, is finally judged based on splashing risk of the track to spring, is obtained most
Whole risk profile result.
Figure 11 and Figure 12 are please referred to, Figure 11 is that a kind of spring provided in an embodiment of the present invention is broken the signal of splashing original state
Figure, Figure 12 are that a kind of spring provided in an embodiment of the present invention is broken splashing trace simulation schematic diagram.For example, obtaining loop iteration
1236522 analyses obtain spring fracture splashing track when simulation 0.1s after spring is broken, it is first in fracture splashing to obtain spring
Velocity amplitude when beginning state is 10.36m/s, spring when be broken splashing original state by vertically on the basis of initial angle angle
Angle value is 29 °, it is possible thereby to it is inferred to the fracture splashing track that the process that spring fracture is splashed at least needs simulation calculation 2s, if
FEM calculation is used completely, then is at least needed loop iteration tens million of times, herein using the splashing rail of 0.1s after spring fracture
Mark is in conjunction with the fracture splashing track of the oblique available spring of throwing formula, and as shown in figure 12, the splashing maximum height of spring is
The splashing maximum distance of 4.11m, spring are 9.1m, if simulation section is underground cable section, section in the actual conditions of simulation
The vehicle of operation is subway B-type vehicle, and the roof of such vehicle is about 4.6m apart from ground, therefore spring fracture flies in this example
It splashes and is possible to get to height as equipment or object etc. within the scope of 4.11m, other equipment such as vehicle window or along the line.In addition, spring
Splashing maximum distance reach 9.1m, and shield tunnel internal diameter is 5.5m, therefore in this case, spring fracture is splashed may be
It rebounds after striking tunnel wall and strikes vehicle and other equipment.
During above-mentioned realization, the splashing risk of spring is carried out by the fracture splashing risk data of the spring of acquisition
It predicts and obtains risk profile result, it is ensured that the reliability and accuracy of risk profile result fly according to spring in fracture
The fracture splashing analogue data of motion capture spring when splashing original state, and then based on fracture splashing analogue data come mould
The track that the fracture of spring is splashed is drawn up, the splashing risk of spring is judged with this, accurate risk profile knot can also be obtained
Fruit.
Figure 13 is please referred to, Figure 13 is that a kind of railway fastening elastic rod provided in an embodiment of the present invention is broken splashing risk profile dress
The structural block diagram set, railway fastening elastic rod fracture splashing risk profile device 100 include the following:
Physical model establishes module 110, for establishing three-dimensional non-linear finite element model, the three-dimensional non-linear finite element
Model is the solid finite meta-model formed after assembling to rail fastener, and the rail fastener includes rail, spring, gauge
Block, elastic rubber pad and iron chair.
State setting module 120, for setting service state for the solid finite meta-model, the service state refers to
Buckle press is generated between the spring and the rail.
Building of Simulation Model module 130, for establishing the coupled room simulation model of vehicle Yu the rail.
Dynamic response analysis module 140, for obtaining and wave occur in the rail according to the coupled room simulation model
Grind situation when the vehicle and the rail between dynamic response data, the dynamic response data include rail fastening power,
Rail dynamic displacement, rail vibration acceleration.
Risk data obtains module 150, non-thread for being input to the three-dimensional using the dynamic response data as excitation
Property finite element model, obtains the fracture splashing risk data of the spring.
Risk profile module 160, for being broken splashing risk data to the splashing wind of the spring according to the spring
Danger is predicted, and obtains risk profile result.
Specifically, the physical model establishes module 110 and includes:
Attribute acquiring unit, for obtaining the geometric attribute and physical attribute of the rail fastener, the geometric attribute packet
Sectional area, the moment of inertia, section factor are included, the physical attribute includes density of material, elasticity modulus and Poisson's ratio.
Model foundation unit, for establishing the three-dimensional of the rail fastener according to the geometric attribute and the physical attribute
Nonlinear finite element model.
Specifically, the risk data acquisition module 150 includes:
Stress Map generation unit, for being input to the three of the rail fastener for the dynamic response data as excitation
Nonlinear finite element model is tieed up, the Stress Map of the rail fastener is generated.
Stress Map analytical unit, for obtaining the broken part of the spring according to the Stress Map of the rail fastener
Position.
Motion capture unit, for obtaining the exercise data of the spring of the snap in fracture, institute
The exercise data of spring is stated as the fracture splashing risk data for characterizing the spring.
Specifically, the risk profile module 160 includes:
Primary data acquiring unit is being broken for obtaining the spring according to the fracture splashing risk data of the spring
Velocity amplitude and angle value when splashing original state.
Analogue data acquiring unit, the fracture for obtaining the spring according to the velocity amplitude and the angle value are splashed
Analogue data.
Analogue unit, for simulating the fracture splashing track of the spring according to the fracture splashing analogue data.
Risk profile result unit, for judging the splashing risk of the spring based on the track, and it is pre- to obtain risk
Survey result.
Specifically, the fracture splashing analogue data includes the splashing maximum height of the spring and the splashing of the spring
Maximum distance, the analogue data acquiring unit include:
First data acquisition subelement, for being based onObtain the splashing maximum height of the spring.
Second data acquisition subelement, for being based onObtain the splashing maximum distance of the spring.
Wherein, H is the splashing maximum height of the spring, and v is initial velocity of the spring when being broken splashing original state
Degree, θ are the drift angle in initial motion direction and vertical direction of the spring when being broken splashing original state, and g is gravity acceleration
Degree, L are the splashing maximum distance of the spring.
The embodiment of the present invention provides a kind of read/write memory medium, when the computer program is executed by processor, executes
Method process performed by electronic equipment in embodiment of the method as shown in Figure 2.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
Specific work process, no longer can excessively be repeated herein with reference to the corresponding process in preceding method.
In conclusion the embodiment of the invention provides a kind of railway fastening elastic rod fracture splashing Risk Forecast Method and dresses
It sets, by establishing three-dimensional non-linear finite element model and being set to service state, resettles the coupling of vehicle Yu the rail
Space simulation model is obtained when wave mill situation occurs in rail between vehicle and rail according to the coupled room simulation model
Then dynamic response data is input to three-dimensional non-linear finite element model for dynamic response data as excitation, obtains spring
It is broken splashing risk data, splashing track can be simulated according to according to the fracture splashing risk data, it is possible to root
The splashing risk of spring is predicted according to the fracture splashing risk data of spring, to obtain risk profile as a result, real in turn
Now spring is broken to splash and carries out more comprehensive safeguard procedures, guarantees the safety traffic of train during operation.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (8)
1. a kind of railway fastening elastic rod is broken splashing Risk Forecast Method, which is characterized in that the described method includes:
Three-dimensional non-linear finite element model is established, the three-dimensional non-linear finite element model is shape after assembling to rail fastener
At solid finite meta-model, the rail fastener includes rail, spring, gauge block, elastic rubber pad and iron chair；
Service state is set by the solid finite meta-model, the service state refers to be produced between the spring and the rail
Raw buckle press；
Establish the coupled room simulation model of vehicle Yu the rail；
According to the coupled room simulation model, obtain when wave mill situation occurs in the rail vehicle and the rail it
Between dynamic response data, the dynamic response data includes rail fastening power, rail dynamic displacement, rail vibration acceleration；
It is input to the three-dimensional non-linear finite element model using the dynamic response data as excitation, obtains the disconnected of the spring
Split splashing risk data, wherein the fracture splashing risk data of the spring includes the snap of the spring in fracture
The exercise data of the spring；
The splashing risk of the spring is predicted according to the fracture splashing risk data of the spring, and obtains risk profile
As a result；
Wherein, the splashing risk of the spring is predicted according to the fracture splashing risk data of the spring, and obtains wind
Dangerous prediction result, comprising:
According to the fracture splashing risk data of the spring obtain velocity amplitude of the spring when being broken splashing original state and
Angle value；
The fracture splashing analogue data of the spring is obtained according to the velocity amplitude and the angle value；
The fracture splashing track of the spring is simulated according to the fracture splashing analogue data；
The splashing risk of the spring is judged based on the track, and obtains risk profile result.
2. the method according to claim 1, wherein described establish three-dimensional non-linear finite element model, comprising:
The geometric attribute and physical attribute of the rail fastener are obtained, the geometric attribute includes sectional area, the moment of inertia, section system
Number, the physical attribute includes density of material, elasticity modulus and Poisson's ratio；
The three-dimensional non-linear finite element model of the rail fastener is established according to the geometric attribute and the physical attribute.
3. the method according to claim 1, wherein being input to using the dynamic response data as excitation described
Three-dimensional non-linear finite element model obtains the fracture splashing risk data of the spring, comprising:
It is input to the three-dimensional non-linear finite element model of the rail fastener using the dynamic response data as excitation, generates institute
State the Stress Map of rail fastener；
The snap of the spring is obtained according to the Stress Map of the rail fastener；
The exercise data of the spring of the snap in fracture is obtained, the exercise data of the spring is for characterizing
The fracture splashing risk data of the spring.
4. the method according to claim 1, wherein the fracture splashing analogue data includes flying for the spring
The splashing maximum distance for splashing maximum height and the spring obtains the disconnected of the spring according to the velocity amplitude and the angle value
Split splashing analogue data, comprising:
It is based onObtain the splashing maximum height of the spring；
It is based onObtain the splashing maximum distance of the spring；
Wherein, H is the splashing maximum height of the spring, and v is velocity amplitude of the spring when being broken splashing original state, θ
For angle value of the spring when being broken splashing original state, g is acceleration of gravity, L be the spring splashing maximum away from
From.
5. a kind of railway fastening elastic rod is broken splashing risk profile device, which is characterized in that described device includes:
Physical model establishes module, and for establishing three-dimensional non-linear finite element model, the three-dimensional non-linear finite element model is
The solid finite meta-model formed after being assembled to rail fastener, the rail fastener include rail, spring, gauge block,
Elastic rubber pad and iron chair；
State setting module, for setting service state for the solid finite meta-model, the service state refers to the bullet
Buckle press is generated between item and the rail；
Building of Simulation Model module, for establishing the coupled room simulation model of vehicle Yu the rail；
There is wave mill situation in the rail for obtaining according to the coupled room simulation model in dynamic response analysis module
Dynamic response data between Shi Suoshu vehicle and the rail, the dynamic response data include that rail fastening power, rail are dynamic
State displacement, rail vibration acceleration；
Risk data obtains module, for being input to the three-dimensional non-linear finite element for the dynamic response data as excitation
Model obtains the fracture splashing risk data of the spring, wherein the fracture splashing risk data of the spring includes the bullet
The exercise data of the snap of item spring in fracture；
Risk profile module carries out the splashing risk of the spring for the fracture splashing risk data according to the spring pre-
It surveys, and obtains risk profile result；
Wherein, the risk profile module includes:
Primary data acquiring unit is splashed for obtaining the spring according to the fracture splashing risk data of the spring in fracture
Velocity amplitude and angle value when original state；
Analogue data acquiring unit, the fracture for obtaining the spring according to the velocity amplitude and the angle value, which is splashed, simulates
Data；
Analogue unit, for simulating the fracture splashing track of the spring according to the fracture splashing analogue data；
Risk profile result unit for judging the splashing risk of the spring based on the track, and obtains risk profile knot
Fruit.
6. device according to claim 5, which is characterized in that the physical model establishes module and includes:
Attribute acquiring unit, for obtaining the geometric attribute and physical attribute of the rail fastener, the geometric attribute includes cutting
Area, the moment of inertia, section factor, the physical attribute include density of material, elasticity modulus and Poisson's ratio；
Model foundation unit, the three-dimensional for establishing the rail fastener according to the geometric attribute and the physical attribute are non-thread
Property finite element model.
7. device according to claim 5, which is characterized in that the risk data obtains module and includes:
Stress Map generation unit, for being input to the three-dimensional non-of the rail fastener for the dynamic response data as excitation
Linear finite model generates the Stress Map of the rail fastener；
Stress Map analytical unit, for obtaining the snap of the spring according to the Stress Map of the rail fastener；
Motion capture unit, for obtaining the exercise data of the spring of the snap in fracture, the bullet
The exercise data of item is the fracture splashing risk data for characterizing the spring.
8. device according to claim 5, which is characterized in that the fracture splashing analogue data includes flying for the spring
The splashing maximum distance of maximum height and the spring is splashed, the analogue data acquiring unit includes:
First data acquisition subelement, for being based onObtain the splashing maximum height of the spring；
Second data acquisition subelement, for being based onObtain the splashing maximum distance of the spring；
Wherein, H is the splashing maximum height of the spring, and v is initial velocity of the spring when being broken splashing original state, θ
The drift angle in the initial motion direction and vertical direction that are the spring when being broken splashing original state, g is acceleration of gravity, L
For the splashing maximum distance of the spring.
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| CN110162846A (en) * | 2019-04-30 | 2019-08-23 | 西南交通大学 | The design method of composite rigidity under a kind of elasticity separated rail fastening system iron chair |
| CN110239587B (en) * | 2019-06-04 | 2020-04-14 | 浙江大学城市学院 | Theoretical detection method for determining position of damaged fastener |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007018916U1 (en) * | 2007-11-27 | 2009-09-03 | Kandt, Olaf | Rail for immobilizing a joint |
| KR20120010473A (en) * | 2010-07-26 | 2012-02-03 | (주)삼성판넬플랜트 | Join support for pannel and pannel using the same |
| US9115506B2 (en) * | 2011-08-17 | 2015-08-25 | Oz-Post, International Llc | Wood to pipe bracket and a connection utilizing such a bracket |
| CN105631124A (en) * | 2015-12-28 | 2016-06-01 | 北京交通大学 | Ballastless track damage analysis method performing combined solution based on definite element expansion and fatigue analysis |
| CN106192634A (en) * | 2016-08-31 | 2016-12-07 | 武汉汉宁轨道交通技术有限公司 | A kind of railroad track elastic bar fastener condition automatic detection device and method |
| CN108240896A (en) * | 2018-04-18 | 2018-07-03 | 西南交通大学 | Fatigue strength measuring method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202599579U (en) * | 2012-04-13 | 2012-12-12 | 东北电力科学研究院有限公司 | Measuring instrument utilizing inherent frequency of bolt to measure bolt load |
-
2018
- 2018-12-04 CN CN201811476829.3A patent/CN109635403B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007018916U1 (en) * | 2007-11-27 | 2009-09-03 | Kandt, Olaf | Rail for immobilizing a joint |
| KR20120010473A (en) * | 2010-07-26 | 2012-02-03 | (주)삼성판넬플랜트 | Join support for pannel and pannel using the same |
| US9115506B2 (en) * | 2011-08-17 | 2015-08-25 | Oz-Post, International Llc | Wood to pipe bracket and a connection utilizing such a bracket |
| CN105631124A (en) * | 2015-12-28 | 2016-06-01 | 北京交通大学 | Ballastless track damage analysis method performing combined solution based on definite element expansion and fatigue analysis |
| CN106192634A (en) * | 2016-08-31 | 2016-12-07 | 武汉汉宁轨道交通技术有限公司 | A kind of railroad track elastic bar fastener condition automatic detection device and method |
| CN108240896A (en) * | 2018-04-18 | 2018-07-03 | 西南交通大学 | Fatigue strength measuring method and device |
Non-Patent Citations (5)
| Title |
|---|
| Experimental investigation of the vibration-attenuating effect of rail suspension fasteners on environment vibration induced by subway;Ping Wang 等;《International LTD.Journal of Vibroengineering》;20160930;第18卷(第6期);第3956-3969页 * |
| Influence Evaluation of Fastener Stiffness Match on Subway Rail Switch Safety;Mingzheng Ma 等;《Applied Mechanics and Materials》;20131219;第482卷;第256-261页 * |
| 地铁扣件III型弹条失效有限元分析;尚红霞 等;《工程力学》;20150930;第32卷(第9期);第210-215页 * |
| 基于断裂和损伤力学的无砟轨道静动力特性研究;林红松;《万方数据库.学位论文库》;20100315;全文 * |
| 高速铁路有砟轨道道砟飞溅的研究与防治;井国庆;《铁道建筑》;20090228(第2期);第97-98页 * |
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| CN109635403A (en) | 2019-04-16 |
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