CN108916471A - A kind of the determination method and determining system of pipeline clamp installation site - Google Patents
A kind of the determination method and determining system of pipeline clamp installation site Download PDFInfo
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- CN108916471A CN108916471A CN201810833500.1A CN201810833500A CN108916471A CN 108916471 A CN108916471 A CN 108916471A CN 201810833500 A CN201810833500 A CN 201810833500A CN 108916471 A CN108916471 A CN 108916471A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
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- Vibration Prevention Devices (AREA)
Abstract
The present invention discloses the determination method and determining system of a kind of pipeline clamp installation site.The method of determination includes：Obtain the fluid parameter of fluid in geometric parameter, material parameter, Service Environment parameter and the Target pipe of Target pipe；The optional installation site of clamp connection parameter and each clip is determined according to the Service Environment parameter of Target pipe；The fluid structurecoupling kinetic model of Target pipe is established according to geometric parameter, material parameter, fluid parameter, clamp connection parameter and optional installation site；The optional position fundamental frequency and the first step mode vibration shape of Target pipe corresponding with optional installation site are determined according to fluid structurecoupling kinetic model；Determine that the optimal installation site of clip, fundamental frequency difference are the difference of the target fundamental frequency of optional position fundamental frequency and Target pipe according to fundamental frequency difference and the first step mode vibration shape.The present invention can effectively improve the intrinsic frequency of pipeline, and the dynamics quality of lifting system effectively avoids the generation of resonance, and easy to operate, practicability is good, and convenient and efficient and accuracy is high.
Description
Technical field
The present invention relates to pipeline construction fields, more particularly to the determination method and determination of a kind of pipeline clamp installation site
System.
Background technique
Airplane hydraulic pipeline is mainly used for the conveying of the media such as fuel oil, lubricating oil, hydraulic oil and air, is the weight of aircraft system
Want component part.The security reliability of pipe-line system is directly related to the safety of aircraft operation, and the failure of pipe-line system is main
It is as caused by vibrating.When pipe-line system is shaped, trend and structure can not change, can only be by pipeline
Clip is installed to increase the rigidity of pipe-line system in appropriate location, to increase its intrinsic frequency, intrinsic frequency is made to avoid its exciting
Frequency is to avoid the generation resonated.
However, airplane hydraulic pipeline system is intricate, the arrangement of clip position is compared and is moved from prototype mostly
It plants, when construction is centainly adjusted according to practical setting-out, and the final installation site of clip greatly relies on the experience of designer.Especially
It is some small-sized pipe-line systems, and supporting form, parameter, position and quantity of clip etc. mostly by artificial Solve on site, cause reality
The clip layout on border has biggish randomness.Sometimes the not only not no dynamics quality of lifting system, or even part can be generated
Stress concentrates the failure source for becoming pipeline structure instead, has seriously undermined the reliability of pipe-line system.
Therefore, how to determine that the installation site of clip to improve the intrinsic frequency of pipeline, becomes those skilled in the art urgently
Technical problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of determination method of pipeline clamp installation site and system is determined, without artificial ginseng
With, do not depend on the artificial experience and subjective judgement of operator, can effectively improve the intrinsic frequency of pipeline, lifting system it is dynamic
Mechanical quality, easy to operate, practicability is good, and convenient and efficient and accuracy is higher.
To achieve the above object, the present invention provides following schemes：
A kind of determination method of pipeline clamp installation site, the determining method include：
Obtain the stream of fluid in geometric parameter, material parameter, Service Environment parameter and the Target pipe of Target pipe
Body parameter, wherein the Service Environment parameter includes the vibration acceleration or stress of the Target pipe；
The optional installation site of clamp connection parameter and each clip is determined according to the Service Environment parameter of the Target pipe,
The clamp connection parameter includes clip rigidity and clip damping；
According to the geometric parameter, the material parameter, the fluid parameter, the clamp connection parameter and described optional
Installation site establishes the fluid structurecoupling kinetic model of the Target pipe；
According to the determining Target pipe corresponding with the optional installation site of the fluid structurecoupling kinetic model
Optional position fundamental frequency and the first step mode vibration shape；
The optimal installation site of clip is determined according to the fundamental frequency difference and the first step mode vibration shape, wherein the base
Frequency difference is the difference of the target fundamental frequency of the optional position fundamental frequency and the Target pipe.
Optionally, the optimal installation site that clip is determined according to the fundamental frequency difference and the first step mode vibration shape,
It specifically includes：
Judge whether the optional position fundamental frequency is more than or equal to the target fundamental frequency, obtains the first judging result；
It, can by described in when the first judging result indicates that the optional position fundamental frequency is more than or equal to the target fundamental frequency
Installation site is selected to be determined as the optimal installation site of each clip；
When the first judging result indicates that the optional position fundamental frequency is less than the target fundamental frequency, according to the First-Order Mode
The optional installation site of the location updating clip of the mode displacement maximum point of the state vibration shape, " according to the geometric parameters described in return
Several, the described material parameter, the fluid parameter, the clamp connection parameter and the optional installation site establish the target tube
The fluid structurecoupling kinetic model in road ".
Optionally, the location updating clip of the mode displacement maximum point according to the first step mode vibration shape can
Installation site is selected, is specifically included：
Clip is added at the mode displacement maximum point of the first step mode vibration shape.
Optionally, the clip rigidity includes clip Line stiffness and clip angular rigidity, and the clip damping includes clip line
Damping and the damping of clip angle.
Optionally, the geometric parameter of the Target pipe includes：Internal diameter, outer diameter, length and the radian of Target pipe.
A kind of determination system of pipeline clamp installation site, the determining system include：
Parameter acquisition module, for obtaining geometric parameter, material parameter, Service Environment parameter and the mesh of Target pipe
Mark the fluid parameter of fluid in pipeline, wherein the Service Environment parameter includes the vibration acceleration of the Target pipe or answers
Power；
Connecting quantity and optional position determining module, for determining clip according to the Service Environment parameter of the Target pipe
The optional installation site of Connecting quantity and each clip, the clamp connection parameter include clip rigidity and clip damping；
Kinetic model establishes module, for according to the geometric parameter, the material parameter, the fluid parameter, institute
It states clamp connection parameter and the optional installation site establishes the fluid structurecoupling kinetic model of the Target pipe；
Fundamental frequency and a first order mode determining module, for according to fluid structurecoupling kinetic model determination and the optional peace
The optional position fundamental frequency and the first step mode vibration shape of the corresponding Target pipe of holding position；
Optimal installation site determining module, for determining clip according to the fundamental frequency difference and the first step mode vibration shape
Optimal installation site, wherein the fundamental frequency difference is the difference of the target fundamental frequency of the optional position fundamental frequency and the Target pipe.
Optionally, the optimal installation site determining module specifically includes：
First judging unit is obtained for judging whether the optional position fundamental frequency is more than or equal to the target fundamental frequency
Obtain the first judging result；
Optimal installation site determination unit, for when the first judging result expression optional position fundamental frequency is greater than or waits
When the target fundamental frequency, the optional installation site is determined as to the optimal installation site of each clip；
Location updating unit, for indicating that the optional position fundamental frequency is less than the target fundamental frequency when the first judging result
When, according to the optional installation site of the location updating clip of the mode displacement maximum point of the first step mode vibration shape.
Optionally, the location updating unit specifically includes：
Clip adds subelement, for adding clip at the mode displacement maximum point of the first step mode vibration shape.
The specific embodiment provided according to the present invention, the invention discloses following technical effects：
The determination method of pipeline clamp installation site provided by the invention and determining system, first according to the clothes of Target pipe
Labour environmental parameter determines the optional installation site of clamp connection parameter and each clip, then according to geometric parameter, material parameter, stream
Body parameter, clamp connection parameter and optional installation site establish the fluid structurecoupling kinetic model of Target pipe, and solid according to stream
Coupling Dynamic Model determines corresponding optional position fundamental frequency and the first step mode vibration shape, finally according to optional position fundamental frequency and mesh
The difference of fundamental frequency and the installation site of first step mode vibration shape Automatic Optimal clip are marked, so that the fundamental frequency of pipeline is reached target value, i.e.,
The intrinsic frequency of pipeline is set to avoid its excited frequency to avoid the generation of resonance.Clip is carried out based on design experiences with existing
The method of arrangement is compared, and determining method provided by the invention and determining system participate in without artificial, do not depend on the people of operator
Therefore work experience and subjective judgement can effectively improve the intrinsic frequency of pipeline, the dynamics quality of lifting system, operation letter
Single, practicability is good, and convenient and efficient and accuracy is higher.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart of the determination method for the pipeline clamp installation site that the embodiment of the present invention 1 provides；
Fig. 2 is the finite element model figure for the both ends supporting and space pipeline that the embodiment of the present invention 1 provides；
Fig. 3 is the first-order bending vibation mode picture for the both ends supporting and space pipeline that the embodiment of the present invention 1 provides；
Fig. 4 is the dimensionless vibration of each node in the first first order mode of the both ends supporting pipeline that the embodiment of the present invention 1 provides
Type displacement diagram；
Fig. 5 is the fundamental frequency of the both ends supporting and space pipeline under the different clip positions and rigidity that the embodiment of the present invention 1 provides
Figure；
Fig. 6 is the pipe modes analysis chart for the three-point mount supporting pipeline that the embodiment of the present invention 1 provides；
Fig. 7 is the immeasurable of each node in the first first order mode of the three-point mount supporting pipeline that the embodiment of the present invention 1 provides
Guiding principle mode displacement；
Fig. 8 is the structural block diagram of the determination system for the pipeline clamp installation site that the embodiment of the present invention 2 provides；
Fig. 9 is the work flow diagram for the determination system that the embodiment of the present invention 2 provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of determination method of pipeline clamp installation site and system is determined, without artificial ginseng
With, do not depend on the artificial experience and subjective judgement of operator, can effectively improve the intrinsic frequency of pipeline, lifting system it is dynamic
Mechanical quality, easy to operate, practicability is good, and convenient and efficient and accuracy is higher.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1：
Fig. 1 is the flow chart of the determination method for the pipeline clamp installation site that the embodiment of the present invention 1 provides.As shown in Figure 1,
A kind of determination method of pipeline clamp installation site, the determining method include：
Step 101：It obtains in geometric parameter, material parameter, Service Environment parameter and the Target pipe of Target pipe
The fluid parameter of fluid, wherein the Service Environment parameter includes the vibration acceleration or stress of the Target pipe.The mesh
Mark pipeline geometric parameter include：Internal diameter, outer diameter, length and the radian of Target pipe.
Step 102：The optional of clamp connection parameter and each clip is determined according to the Service Environment parameter of the Target pipe
Installation site, the clamp connection parameter include clip rigidity and clip damping.Specifically, the clip rigidity includes x-axis, y
Axis, the clip Line stiffness in z-axis direction and around x-axis, y-axis, the clip angular rigidity in z-axis direction, the clip damping includes x-axis, y
The clip line of axis, z-axis direction damps and around x-axis, y-axis, the clip angle damping in z-axis direction.
Step 103：According to the geometric parameter, the material parameter, the fluid parameter, the clamp connection parameter and
The optional installation site establishes the fluid structurecoupling kinetic model of the Target pipe.
Wherein, the modeling pattern of fluid structurecoupling kinetic model mainly include solid modelling with based on CATIA model modeling.
(1) solid modelling is primarily directed to the practical model of pipeline, according to the key point geometric parameter of pipeline, including it is inside and outside
Diameter, length, radian and material parameter, fluid parameter etc. complete pipeline fluid structurecoupling Dynamic Modeling.
(2) CATIA software export wrl formatted file is mainly based upon based on CATIA model modeling, to wrl file
VRML language is decoded and is calculated the key point information of pipeline, establishes pipeline fluid structurecoupling kinetic model.
The space pipeline finite element model that the present embodiment is established 4 straight tubes and 3 sections of bend pipes as shown in Fig. 2, be made of.Pipeline
Specific size is：The length L1=530mm of pipeline 1, the length L2=930mm of pipeline 2, the length L3=520mm of pipeline 3, pipe
The length L4=880mm in road 4, outer diameter tube are 21mm, and pipeline wall thickness is 2.4mm.The material parameter of pipeline is：Density is
7850kg/m3, Young's modulus is 2 × 1011N/m2, Poisson's ratio 0.3.The pipeline by it is discrete be 22 units, amount to 23 section
Point.If S1 and S2 is the fixation supporting point of pipe ends, it is arranged in node 1 and node 23.
Step 104：According to the determining mesh corresponding with the optional installation site of the fluid structurecoupling kinetic model
Mark the optional position fundamental frequency and the first step mode vibration shape of pipeline.
The intrinsic frequency and natural mode of vibration of pipeline can be obtained in fluid structurecoupling kinetic model by solving pipe-line system, i.e.,
The fundamental frequency and the first step mode vibration shape of pipeline can be obtained.
Step 105：The optimal installation site of clip is determined according to the fundamental frequency difference and the first step mode vibration shape,
In, the fundamental frequency difference is the difference of the target fundamental frequency of the optional position fundamental frequency and the Target pipe.
Specifically, step 105：The optimal installation position of clip is determined according to the fundamental frequency difference and the first step mode vibration shape
It sets, specifically includes：
Judge whether the optional position fundamental frequency is more than or equal to the target fundamental frequency, obtains the first judging result；
It, can by described in when the first judging result indicates that the optional position fundamental frequency is more than or equal to the target fundamental frequency
Installation site is selected to be determined as the optimal installation site of each clip；
When the first judging result indicates that the optional position fundamental frequency is less than the target fundamental frequency, according to the First-Order Mode
The optional installation site of the location updating clip of the mode displacement maximum point of the state vibration shape, returns to the step 103：According to described
Described in geometric parameter, the material parameter, the fluid parameter, the clamp connection parameter and the optional installation site are established
The fluid structurecoupling kinetic model of Target pipe.Wherein, according to the mode displacement maximum point of the first step mode vibration shape
The optional installation site of location updating clip, specifically includes：At the mode displacement maximum point of the first step mode vibration shape
Add clip.
Pipeline fundamental frequency and the first first order mode can be obtained in clip by applying a large amount of different locations and quantity, finds clip position
Set the affecting laws with quantity to pipeline fundamental frequency：Apply at the modal displacement maximum of all adjacent fixation supporting points of pipeline
Clip, the fundamental frequency of pipeline are up to maximum value, and such situation can obtain the optimal location and quantity of clip optimization, detailed process
It is as follows：
(1) both ends are the situation of fixed support
In order to farthest improve pipeline fundamental frequency, needs to study sensitivity of the clip position to pipeline fundamental frequency is improved, obtain
Apply the optimal location of clip to pipeline.Model analysis is carried out to the pipeline under the bearing situation, pipeline fundamental frequency is 12.21Hz,
First first order mode is as shown in Figure 3.Fig. 4 is the dimensionless mode displacement of each node in the first first order mode.Clip position in order to obtain
The affecting laws to pipeline fundamental frequency are set, select to apply the clip of different-stiffness in different location, table 1 and Fig. 5 are illustrated not
With the pitch variation situation under position and rigidity clip.From calculated result it can be seen that：
1) fundamental frequency can farthest be improved by applying clip in the maximum node of dimensionless mode displacement, be to apply single card
The optimal location of hoop；
2) rigidity of clip is 106N/m or more, calculated result substantially close to, it can think fixed support.
Fundamental frequency unit under 1 clip different location of table and rigidity：Hz
(2) situation of three-point mount support
It is that the first first order mode is displaced maximum, (node at this that optimal clip position is obtained in the case of both ends are fixed
12) a fixed support S3 is set, that is, sets optimized good clip, clip rigidity is 108N/m, such as part (a) of Fig. 6
It is shown.Model analysis is carried out to the pipeline under three-point mount support, the fundamental frequency of pipeline is 30.26Hz, and the first step mode vibration shape is such as
Shown in part (b) of Fig. 6.It in order to further increase pipeline fundamental frequency, needs to continue growing clip, it is now desired to solve as how most
Few clip farthest improves the problem of pipeline fundamental frequency.
Fig. 7 is the dimensionless mode displacement of each node in the first first order mode, from bending vibation mode picture as can be seen that solid at three
Occur two maximum points between fixed point.According to the pipeline analysis result under two fixed, it is contemplated that further maximum
Pipeline fundamental frequency is improved to degree, a clip can be applied at the mode displacement maximum point between every two clip fixed point,
It needs to apply two clips simultaneously under three fixed points.
For further progress verifying, inventor calculates the pipeline base for comparing in different location while applying two clips
Frequently, one of clip is added to node 2 between node 11, another is added to node 13 between node 22, and clip rigidity is set
It is set to 108N/m.Table 2 is the pipeline fundamental frequency under different clip positions and rigidity.It can be seen that from the calculated result of table 2：Three solid points
When clip being not added surely, fundamental frequency 30.26Hz；When three-point mount applies two clips, pipeline fundamental frequency maximum is increased to 110.67Hz,
Clip position exactly corresponds to two maximum points of the first first order mode displacement, respectively node 7 and node 18, this in imagination
The clip optimal location of proposition is completely the same.Thus, it is possible to draw a conclusion：The modal displacement maximum point of two fixed supporting points
It is the optimal clip location point for further increasing pipeline fundamental frequency.
Fundamental frequency unit under 2 clip different location of table and rigidity：Hz
As it can be seen that the determination method of pipeline clamp installation site provided by the invention, participates in without artificial, does not depend on operator
Therefore the artificial experience and subjective judgement of member can effectively improve the intrinsic frequency of pipeline, the dynamics quality of lifting system,
Easy to operate, practicability is good, and convenient and efficient and accuracy is higher.Meanwhile the present invention can complete the rapid finite member of pipeline and build
Mould has biggish engineering application value for aviation pipeline coherent detection.Further, determining method provided by the invention
Visibility is higher, and for the threedimensional model of pipeline, clip application position, mode of oscillation vibration shape etc. all has good graphical display
Effect.
Embodiment 2：
Fig. 8 is the structural block diagram of the determination system for the pipeline clamp installation site that the embodiment of the present invention 2 provides.Fig. 9 is pipe
The work flow diagram of the determination system of road clip installation site.As shown in Figure 8 and Figure 9, a kind of pipeline clamp installation site is really
Determine system, the determining system includes：
Parameter acquisition module 201, for obtaining geometric parameter, material parameter, Service Environment parameter and the institute of Target pipe
State the fluid parameter of fluid in Target pipe, wherein the Service Environment parameter includes the vibration acceleration of the Target pipe
Or stress；
Connecting quantity and optional position determining module 202, for being determined according to the Service Environment parameter of the Target pipe
The optional installation site of clamp connection parameter and each clip, the clamp connection parameter include clip rigidity and clip damping；
Kinetic model establishes module 203, for according to the geometric parameter, the material parameter, the fluid parameter,
The clamp connection parameter and the optional installation site establish the fluid structurecoupling kinetic model of the Target pipe；
Fundamental frequency and a first order mode determining module 204, for according to the fluid structurecoupling kinetic model it is determining with it is described can
Select the optional position fundamental frequency and the first step mode vibration shape of the corresponding Target pipe of installation site；
Optimal installation site determining module 205, for determining card according to the fundamental frequency difference and the first step mode vibration shape
The optimal installation site of hoop, wherein the fundamental frequency difference is the target fundamental frequency of the optional position fundamental frequency and the Target pipe
Difference.
Specifically, the optimal installation site determining module 205 specifically includes：
First judging unit is obtained for judging whether the optional position fundamental frequency is more than or equal to the target fundamental frequency
Obtain the first judging result；
Optimal installation site determination unit, for when the first judging result expression optional position fundamental frequency is greater than or waits
When the target fundamental frequency, the optional installation site is determined as to the optimal installation site of each clip；
Location updating unit, for indicating that the optional position fundamental frequency is less than the target fundamental frequency when the first judging result
When, according to the optional installation site of the location updating clip of the mode displacement maximum point of the first step mode vibration shape.Wherein,
The location updating unit specifically includes：
Clip adds subelement, for adding clip at the mode displacement maximum point of the first step mode vibration shape.
As it can be seen that the determination system of pipeline clamp installation site provided by the invention can be limited for the progress of certain fixing model pipeline
Meta Model determines clamp connection rigidity and installation site according to actual installation condition, carries out model analysis to the pipeline of foundation and obtains
To the intrinsic frequency and natural mode of vibration of pipeline, model analysis is carried out to a large amount of pipelines for applying different location and quantity clip, is obtained
To clip position and quantity to the affecting laws of pipeline fundamental frequency, clip Automatic Optimal is carried out according to this rule, according to fundamental frequency target
Determine the optimal location and quantity that clip applies.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of determination method of pipeline clamp installation site, which is characterized in that the determining method includes：
Obtain the fluid ginseng of fluid in geometric parameter, material parameter, Service Environment parameter and the Target pipe of Target pipe
Number, wherein the Service Environment parameter includes the vibration acceleration or stress of the Target pipe；
The optional installation site of clamp connection parameter and each clip is determined according to the Service Environment parameter of the Target pipe, it is described
Clamp connection parameter includes clip rigidity and clip damping；
According to the geometric parameter, the material parameter, the fluid parameter, the clamp connection parameter and the optional installation
The fluid structurecoupling kinetic model of the Target pipe is established in position；
According to the optional of the determining Target pipe corresponding with the optional installation site of the fluid structurecoupling kinetic model
Position fundamental frequency and the first step mode vibration shape；
The optimal installation site of clip is determined according to the fundamental frequency difference and the first step mode vibration shape, wherein the fundamental frequency is poor
For the difference of the optional position fundamental frequency and the target fundamental frequency of the Target pipe.
2. determining method according to claim 1, which is characterized in that described according to the fundamental frequency difference and the First-Order Mode
The state vibration shape determines the optimal installation site of clip, specifically includes：
Judge whether the optional position fundamental frequency is more than or equal to the target fundamental frequency, obtains the first judging result；
When the first judging result indicates that the optional position fundamental frequency is more than or equal to the target fundamental frequency, by the optional peace
Holding position is determined as the optimal installation site of each clip；
When the first judging result indicates that the optional position fundamental frequency is less than the target fundamental frequency, shaken according to the first step mode
The optional installation site of the location updating clip of the mode displacement maximum point of type, " according to the geometric parameter, institute described in return
It states material parameter, the fluid parameter, the clamp connection parameter and the optional installation site and establishes the Target pipe
Fluid structurecoupling kinetic model ".
3. determining method according to claim 2, which is characterized in that the vibration shape according to the first step mode vibration shape
It is displaced the optional installation site of the location updating clip of maximum point, is specifically included：
Clip is added at the mode displacement maximum point of the first step mode vibration shape.
4. determining method according to claim 1, which is characterized in that the clip rigidity includes clip Line stiffness and clip
Angular rigidity, the clip damping include the damping of clip line and the damping of clip angle.
5. determining method according to claim 1, which is characterized in that the geometric parameter of the Target pipe includes：Target
Internal diameter, outer diameter, length and the radian of pipeline.
6. a kind of determination system of pipeline clamp installation site, which is characterized in that the determining system includes：
Parameter acquisition module, for obtaining geometric parameter, material parameter, Service Environment parameter and the target tube of Target pipe
The fluid parameter of fluid in road, wherein the Service Environment parameter includes the vibration acceleration or stress of the Target pipe；
Connecting quantity and optional position determining module, for determining clamp connection according to the Service Environment parameter of the Target pipe
The optional installation site of parameter and each clip, the clamp connection parameter include clip rigidity and clip damping；
Kinetic model establishes module, for according to the geometric parameter, the material parameter, the fluid parameter, the card
Hoop Connecting quantity and the optional installation site establish the fluid structurecoupling kinetic model of the Target pipe；
Fundamental frequency and a first order mode determining module, for according to fluid structurecoupling kinetic model determination and the optional installation position
Set the optional position fundamental frequency and the first step mode vibration shape of the corresponding Target pipe；
Optimal installation site determining module, for determining the optimal of clip according to the fundamental frequency difference and the first step mode vibration shape
Installation site, wherein the fundamental frequency difference is the difference of the target fundamental frequency of the optional position fundamental frequency and the Target pipe.
7. determining system according to claim 6, which is characterized in that the optimal installation site determining module is specifically wrapped
It includes：
First judging unit obtains for judging whether the optional position fundamental frequency is more than or equal to the target fundamental frequency
One judging result；
Optimal installation site determination unit, for indicating that the optional position fundamental frequency is more than or equal to institute when the first judging result
When stating target fundamental frequency, the optional installation site is determined as to the optimal installation site of each clip；
Location updating unit is used for when the first judging result indicates that the optional position fundamental frequency is less than the target fundamental frequency, root
According to the optional installation site of the location updating clip of the mode displacement maximum point of the first step mode vibration shape.
8. determining system according to claim 7, which is characterized in that the location updating unit specifically includes：
Clip adds subelement, for adding clip at the mode displacement maximum point of the first step mode vibration shape.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109657352A (en) * | 2018-12-19 | 2019-04-19 | 西北工业大学 | A kind of determination method of aviation pipeline clamp bolt screw-down torque |
| CN110222476A (en) * | 2019-07-04 | 2019-09-10 | 辽宁石油化工大学 | Intelligent optimized design method towards pipeline laying and clip arrangement global optimization |
| CN114877135A (en) * | 2022-05-10 | 2022-08-09 | 东软睿驰汽车技术（沈阳）有限公司 | Fixing method and device of battery pack water pipe, electronic equipment and readable storage medium |
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| CN110222476B (en) * | 2019-07-04 | 2023-05-16 | 辽宁石油化工大学 | Intelligent optimization design method for pipeline laying and clamp arrangement overall optimization |
| CN114877135A (en) * | 2022-05-10 | 2022-08-09 | 东软睿驰汽车技术（沈阳）有限公司 | Fixing method and device of battery pack water pipe, electronic equipment and readable storage medium |
| CN114877135B (en) * | 2022-05-10 | 2024-04-05 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for fixing battery pack water pipe, electronic equipment and readable storage medium |
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