CN109241557A - A kind of design method of suspension arm of crane - Google Patents
A kind of design method of suspension arm of crane Download PDFInfo
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- CN109241557A CN109241557A CN201810848823.8A CN201810848823A CN109241557A CN 109241557 A CN109241557 A CN 109241557A CN 201810848823 A CN201810848823 A CN 201810848823A CN 109241557 A CN109241557 A CN 109241557A
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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
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/06—Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention discloses a kind of design methods of suspension arm of crane, belong to crane mechanical design field.This method includes solving finite element models to obtain performance requirement parameter, and Calculation of Sensitivity model is established according to the plate thickness of performance requirement parameter and boom, then by solving Calculation of Sensitivity model, to determine key plate in all plates, finally using the thickness of crucial plate as optimization design variable, and according to optimization design variable, optimization constraint condition and optimization aim, to obtain dimensionally-optimised model, dimensionally-optimised model is finally solved, final boom is obtained.Due to can first determine crucial plate, then actively using parameters such as the performance requirements of boom structure as optimization design variable, optimization constraint condition, and optimization aim can be set and optimized, so avoiding all plates of passive optimization boom, the design cycle of product is reduced, design efficiency is improved.
Description
Technical field
The present invention relates to crane mechanical design field, in particular to a kind of design method of suspension arm of crane.
Background technique
Boom is the main function components of crane, plays the role of receiving and transmitting load.Boom design will not only guarantee
Structural strength and stability also need to reduce its weight as far as possible.
Common design method is first rule of thumb or the similar boom of analogy structure establishes the initial of boom now
Change geometrical model, emulation check then is carried out to structural behaviour, then carry out anti-on the basis of emulating and checking to each plate thickness of boom
Multiple adjustment and check finally obtains satisfactory boom structure scheme.
It is chosen due to the plate thickness of initialization geometrical model and has certain blindness, and later to initialization geometrical model
Optimization can only be by check and adjustment realization repeatedly, so plate thickness is chosen not once when foundation initializes geometrical model
It is correct or there is no the similar booms of structure as reference, then after optimizing cycle will be very very long, and gained model
The problem of performance effect of optimization is undesirable, more to the performance requirement of boom structure, the design method will be more prominent.
Summary of the invention
In order to solve the problems in the prior art, the embodiment of the invention provides a kind of design methods of suspension arm of crane.Institute
It is as follows to state technical solution:
A kind of design method of suspension arm of crane, which comprises
Construct the initialization geometrical model of boom；
The geometry mid-plane model of the boom is generated according to the initialization geometrical model；
The geometry mid-plane model is carried out using FInite Element discrete；
Receive it is discrete after the geometry mid-plane model boundary condition, to obtain finite element model；
The finite element model is solved, to obtain performance requirement parameter；
Calculation of Sensitivity model is established, it, will using the performance requirement parameter as the function of the Calculation of Sensitivity model
Independent variable of the plate thickness of the boom as the Calculation of Sensitivity model；
The Thickness range for setting each plate of the boom chooses each plate in the value range
Multiple Thickness Test numerical value；
According to the Thickness Test numerical value and Calculation of Sensitivity model of each plate, each plate is calculated
Change of sensitivity amount；
According to the change of sensitivity amount, key plate is determined, the key plate is spirit described in all plates
The maximum plate of sensitivity variable quantity；
Optimization design variable, optimization constraint condition and optimization aim are received, to obtain the dimensionally-optimised model of the boom,
The optimization design variable is the thickness of the crucial plate；
Solve the dimensionally-optimised model.
Further, multiple Thickness Test numerical value that each plate is chosen in the value range, comprising:
By any method of sampling in whole sampling methods, fractional-sample method, Latin Hypercube Sampling method, taken described
Multiple Thickness Test numerical value of each plate are chosen in value range.
Further, the initialization geometrical model of the building boom, comprising:
Receive the construction profile and dimensional parameters of the boom；
The initialization geometrical model of the boom is generated according to the construction profile and the dimensional parameters.
It is further, described that geometry mid-plane model is generated according to the initialization geometrical model, comprising:
Generate the middle face of each steel plate in the initialization geometrical model；
Geometry mid-plane model is generated according to the middle face of each steel plate.
Further, the boundary condition includes the maximum load and freedom degree that the boom is born.
Further, the optimization design variable, the optimization constraint condition and the optimization aim are according to the performance
It is required that parameter setting, the performance requirement parameter includes the rigidity of structure, structural strength, resonance frequency, stability and total weight.
Further, the optimization constraint condition is that the structural strength of the boom and stability are made, the optimization aim
For the total weight of the boom.
Further, the method also includes:
Receive the boundary condition of the dimensionally-optimised model, the boundary condition of the dimensionally-optimised model and it is described it is discrete after
The geometry mid-plane model boundary condition it is identical；
Check the dimensionally-optimised model.
Optionally, described to check the dimensionally-optimised model, the structural strength including checking the dimensionally-optimised model.
Optionally, after the check dimensionally-optimised model, the method also includes:
The partial structurtes of the dimensionally-optimised model are adjusted according to check result.
Technical solution provided in an embodiment of the present invention has the benefit that several by the initialization for constructing boom first
What model generates geometry mid-plane model further according to initialization geometrical model, and receives material properties and original material thickness, then
Discrete to the progress of geometry mid-plane model using FInite Element, the boundary condition of the geometry mid-plane model after reception is discrete is to be built with
Meta-model is limited, solving finite element models are established to obtain performance requirement parameter according to the plate thickness of performance requirement parameter and boom
Calculation of Sensitivity model, to determine key plate in all plates, finally will then by solving Calculation of Sensitivity model
The thickness of crucial plate is as optimization design variable, and according to optimization design variable, optimization constraint condition and optimization aim, with
To dimensionally-optimised model, dimensionally-optimised model is finally solved, obtains final boom.Due to can first determine crucial plate, then
Actively using parameters such as the performance requirements of boom structure as optimization design variable, optimization constraint condition, and optimization mesh can be set
Mark optimizes, so avoiding all plates of passive optimization boom, reduces the design cycle of product, improves design effect
Benefit.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of the design method of suspension arm of crane provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the design method of another suspension arm of crane provided in an embodiment of the present invention；
Fig. 3 shows a kind of initialization geometrical model of boom provided in an embodiment of the present invention；
Fig. 4 shows a kind of geometry mid-plane model provided in an embodiment of the present invention；
Fig. 5 is enlarged diagram at A in Fig. 4；
Fig. 6 is enlarged diagram at B in Fig. 4；
Fig. 7 is the finite element model of the first support arm in Fig. 4；
Fig. 8 is the finite element model of support frame part in Fig. 4；
Fig. 9 is the change of sensitivity amount table of comparisons provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of flow chart of the design method of suspension arm of crane provided in an embodiment of the present invention, as shown in Figure 1, the party
Method includes:
S11: the initialization geometrical model of boom is constructed.
S12: the geometry mid-plane model of boom is generated according to initialization geometrical model.
S13: geometry mid-plane model is carried out using FInite Element discrete.
S14: the boundary condition of the geometry mid-plane model after reception is discrete, to obtain finite element model.
S15: solving finite element models, to obtain performance requirement parameter.
S16: establishing Calculation of Sensitivity model, using performance requirement parameter as the function of Calculation of Sensitivity model, by boom
Independent variable of the plate thickness as Calculation of Sensitivity model.
S17: setting the Thickness range of each plate of boom, and multiple thickness of each plate are chosen in value range
Spend test bit.
S18: according to the Thickness Test numerical value and Calculation of Sensitivity model of each plate, the sensitive of each plate is calculated
Spend variable quantity.
S19: according to change of sensitivity amount, determining key plate, crucial plate be all plate medium sensitivity variable quantities most
Big plate.
S110: optimization design variable, optimization constraint condition and optimization aim are received, to obtain the dimensionally-optimised mould of boom
Type, optimization design variable are the thickness of crucial plate.
S111: dimensionally-optimised model is solved.
Technical solution provided in an embodiment of the present invention has the benefit that several by the initialization for constructing boom first
What model generates geometry mid-plane model further according to initialization geometrical model, and receives material properties and original material thickness, then
Discrete to the progress of geometry mid-plane model using FInite Element, the boundary condition of the geometry mid-plane model after reception is discrete is to be built with
Meta-model is limited, solving finite element models are established to obtain performance requirement parameter according to the plate thickness of performance requirement parameter and boom
Calculation of Sensitivity model, to determine key plate in all plates, finally will then by solving Calculation of Sensitivity model
The thickness of crucial plate is as optimization design variable, and according to optimization design variable, optimization constraint condition and optimization aim, with
To dimensionally-optimised model, dimensionally-optimised model is finally solved, obtains final boom.Due to can first determine crucial plate, then
Actively using parameters such as the performance requirements of boom structure as optimization design variable, optimization constraint condition, and optimization mesh can be set
Mark optimizes, so avoiding all plates of passive optimization boom, reduces the design cycle of product, improves design effect
Benefit.
Fig. 2 is the flow chart of the design method of another suspension arm of crane provided in an embodiment of the present invention, as shown in Fig. 2, should
Method includes:
S21: the construction profile and dimensional parameters of boom are received.
Specifically, the construction profile and rough size of boom can be determined according to design requirement, the crane of different purposes,
The structure of boom may also be different, wherein design requirement may include space and the positional relationship of each structure of boom, such as assemble
Size, space arrowhead etc., construction profile include forming the shape and relative positional relationship of each steel plate of boom, size ginseng
Number can be the geometric dimension of each steel plate, including but not limited to length, width and thickness.
It is envisioned that design requirement can also include space and the positional relationship between boom and support member, by
It is generally arranged in support member in boom, such as support, tower body, therefore is contemplated that boom and support when designing boom
Relationship between component.
S22: the initialization geometrical model of boom is generated according to construction profile and dimensional parameters.
In this way, the contours profiles that available boom is basic, provide basic model for subsequent design, initialize geometry mould
Type is three-dimensional plate model.
Fig. 3 shows a kind of initialization geometrical model of boom provided in an embodiment of the present invention, as shown in figure 3, this is initial
Changing geometrical model is three-dimensional plate model, which includes the first support arm 11, the second support arm 12, the first support arm 11 of connection
With the connecting cross beam 13 of the second support arm 12 and it is connected to the support frame 14 of 12 one end of the first support arm 11 and the second support arm.
S23: the middle face of each steel plate in initialization geometrical model is extracted.
Before generating finite element model, it usually needs first simplify to initialization geometrical model, dimensionality reduction simplification is one
The common simplified way of kind, it mainly includes that Medial-Axis Transformation and middle face simplify that dimensionality reduction, which simplifies, since boom is mainly by steel plate splicing structure
At thickness is much smaller than length and width, is consequently belonging to thin-wall part, is suitable for that face is simplified in using, specifically, extracts the first of boom
The middle face of each steel plate in beginningization geometrical model, wherein the middle face of a certain plate refers to when the thickness of plate is reduced to 0, the two of formation
Dimension face.
S24: geometry mid-plane model is generated according to the middle face of each steel plate.
Specifically, Seal treatment is carried out to all middle faces, obtains geometry mid-plane model.
When realization, S24 may include:
Determine middle face to be processed；Wherein, middle face to be processed refers to that corresponding steel plate is connected with each other and middle face is not connected with
Middle face.
Extend middle face to be processed, is connected with each other the middle face of steel plate interconnected, to obtain geometry mid-plane model.It is several
What mid-plane model is the model being made of multiple middle faces, due in extraction face it, be likely to be between each middle face discrete
State, it is between each other and discontinuous, it is therefore desirable to the middle face for choosing two blocks of steel plates interconnected, it will be in one of steel plate
Middle face towards another block of steel plate extends, so that face is connected in two, after the middle face extended to institute's some need is handled,
All middle faces are linked to be an entirety to get geometry mid-plane model is arrived, and geometry mid-plane model can reflect out between each steel plate
Mutual alignment relation, can significantly improve the efficiency of subsequent analysis, and Fig. 4 is shown in a kind of geometry provided in an embodiment of the present invention
Surface model, Fig. 5 are enlarged diagrams at A in Fig. 4, and support frame 14 includes head coverboard 141, head gusset 142, head connection
Plate 143 and nose plate 144, head coverboard 141 are frame structure, and head connecting plate 143 is connected to one end of head coverboard 141, head
One end of portion's coverboard 141 is connect with the first support arm 11 and the second support arm 12 respectively by head connecting plate 143, nose plate 144
It is connect with the other end of head coverboard 141, the junction between nose plate 144 and head coverboard 141 is arranged in head gusset 142.
Fig. 6 is enlarged diagram at B in Fig. 4, as shown in fig. 6, the first support arm 11 include channel steel 34, it is transverse bar 31, perpendicular
Muscle 33 and sealing plate 32, channel steel 34 and sealing plate 32 are interconnected to tubular-shaped structures, and the tubular-shaped structures are in the length perpendicular to channel steel 34
The section configuration in direction is rectangle, and vertical bar 33 is arranged between channel steel 34 and sealing plate 32 along the length direction perpendicular to channel steel 34,
A plurality of transverse bar 31 is vertically disposed on channel steel 34 and the opposite face of sealing plate 32 along the length direction of channel steel 34.
Such as to sealing plate 32 and one piece of vertical bar 33 being connect with sealing plate 32 extract in face when, since the middle face of sealing plate 32 is being sealed
Inside plate 32, the middle face of vertical bar 33 does not connect in the inside of vertical bar 33, therefore between the middle face of sealing plate 32 and the middle face of vertical bar 33
Connect, Seal treatment carried out to the middle face of the middle face of sealing plate 32 and vertical bar 33 at this time, can by vertical bar 33 towards sealing plate 32
Middle face extends, and is allowed to be connected.
Each steel plate in mid-plane model does not have thickness profile, can be accurately reflected by mid-plane model each in boom
Relative positional relationship between steel plate.
S25: material properties and original material thickness are received.
Specifically, material properties include at least density, elasticity modulus and Poisson's ratio, the original material of vertical bar 33 and sealing plate 32
Thickness is set as 12mm, and the original material thickness of transverse bar 31 is set as 11mm, and the original material thickness of channel steel 34 is set as 12mm,
Material properties and original material thickness can be inputted manually according to actual needs.
S26: geometry mid-plane model is carried out using FInite Element discrete.
In this way, can analyze geometry mid-plane model is discrete for multiple associated units, that is, realize with limited
The unknown quantity (associated unit) of quantity goes to approach an infinite number of unknown quantity (boom), to obtain more accurately simulating knot
Fruit.
Wherein, unit number is determined by unit size, and unit size is smaller, and unit number is bigger, conversely, unit size is bigger,
Unit number is smaller.It is worth noting that unit size can be manually set, also, since unit number is bigger, computer
Solving precision is higher, and correspondingly, solution efficiency will be lower, therefore unit size can be configured according to actual demand,
The present invention is without limitation.
S27: the boundary condition of the geometry mid-plane model after reception is discrete, to obtain finite element model.
Fig. 7 is the finite element model of the first support arm in Fig. 4, and Fig. 8 is the finite element model of support frame part in Fig. 4.
Each of Fig. 7 and Fig. 8 small cubes are discrete obtained unit, and in conjunction with Fig. 7 and Fig. 8, boundary condition can be boom
Freedom degree and boom bear maximum load, for the boom of different structure shape, the possibility for the maximum load born is not
Together, maximum load can be configured according to actual condition, and the freedom degree of boom is also related with the actual installation form of boom, figure
The lower end of the first support arm and the second support arm that boom is shown in 4 is installed in such a way that straight pin is hinged, only has one
A rotational freedom, therefore in the finite element model in Fig. 7, a rotational freedom should be arranged in the lower end of the first support end.
It should be noted that the maximum load applied should be greater than the load born in actual condition, to improve boom
Safety in actual condition.
S28: solving finite element models, to obtain performance requirement parameter.
In above-mentioned implementation, performance requirement parameter may include the rigidity of structure, structural strength, resonance frequency, stabilization
Property and total weight, mainly consider structural strength, stability and total weight in the present embodiment.
S29: establishing Calculation of Sensitivity model, using performance requirement parameter as the function of Calculation of Sensitivity model, by boom
Independent variable of the plate thickness as Calculation of Sensitivity model.
S210: the Thickness range of each plate of boom is set, the multiple of each plate are chosen in value range
Thickness Test numerical value.
Optionally, by any method of sampling in whole sampling methods, fractional-sample method, Latin Hypercube Sampling method,
Multiple Thickness Test numerical value of each plate are chosen in value range.
Preferably, it is sampled by Latin Hypercube Sampling method.
S211: according to the Thickness Test numerical value and Calculation of Sensitivity model of each plate, the spirit of each plate is calculated
Sensitivity variable quantity.
S212: according to change of sensitivity amount, determining key plate, crucial plate be all plate medium sensitivity variable quantities most
Big plate.
Fig. 9 is the change of sensitivity amount table of comparisons of all plates, and referring to Fig. 9, this implementation has selected 7 kinds of plates altogether, respectively
It is channel steel 34, transverse bar 31, sealing plate 32, head coverboard 141, head gusset 142, head connecting plate 143 and nose plate 144, is passing through
After calculating, pass through the change of sensitivity amount maximum of the available sealing plate 32 of Fig. 9, followed by channel steel 34.That is, in this implementation
It, can be by sealing plate 32 as crucial plate, to execute subsequent step in example.
S213: optimization design variable, optimization constraint condition and optimization aim, to obtain dimensionally-optimised model, optimization are received
Design variable is the thickness of crucial plate.
Specifically, optimization design variable, optimization constraint condition and optimization aim can manually be set according to performance requirement
Fixed, performance requirement may include the rigidity of structure, structural strength, resonance frequency, stability and total weight, in the present embodiment mainly
Consider structural strength, stability and total weight.
In the present embodiment, optimization constraint condition is that the structural strength of boom and stability are made, and optimization aim is boom
Total weight under the premise of meeting structural strength and stability, keeps total weight minimum, to can protect when optimizing
The structural strength and stability of demonstrate,proving boom can reduce the total weight of boom again, realize the light-weight design of boom.
S214: dimensionally-optimised model is solved.
Optimization design variable is determined by optimization constraint condition and optimization aim, to obtain the size of boom.
S215: dimensionally-optimised model is checked.
In this way, the quality of the boom of design can be improved, it is ensured that boom meets design requirement.
Specifically, the value of optimization design variable is determined according to the optimization aim of setting and optimization constraint condition.It is checking
When, receive the boundary condition of dimensionally-optimised model, wherein the boundary condition of dimensionally-optimised model and it is discrete after geometry in face mould
The boundary condition of type is identical, by dimensionally-optimised modeling boom in stress condition in actual work, to dimensionally-optimised
Model is checked, and may include the check of structural strength and the rigidity of structure.
In the present embodiment, after solution, the material thickness of vertical bar 33 and sealing plate 32 keeps 12mm, the material thickness of transverse bar 31
Being increased by 11mm is 13mm, and the material thickness of channel steel 34 is reduced to 10mm by 12mm.
Further, dimensionally-optimised model is checked, including at least the structural strength for checking dimensionally-optimised model, due to boom
Deformation can be not only generated in actual operation, but also is likely to occur fracture when load is excessive, it is therefore necessary to dimensionally-optimised mould
Type carries out the check of structural strength, and to ensure that boom has enough structural strengths, in the present embodiment, designed boom exists
Maximum stress in real work meets the requirement of structural strength less than the allowable stress 128MPa of material for 125MPa.
In addition, needing the check for carrying out stability to dimensionally-optimised model, also to ensure that the stability of dimensionally-optimised model can
To meet actual need of work.
S216: the partial structurtes of dimensionally-optimised model are adjusted according to check result.
Specifically, dimensionally-optimised model can be adjusted according to the check result of structural strength, the rigidity of structure and stability
Partial structurtes, for example, can be by way of increasing floor or gusset on dimensionally-optimised model, to increase dimensionally-optimised mould
The structural strength and the rigidity of structure of type part, to enhance the stability of dimensionally-optimised model.
After completing to the partial structurtes adjustment of dimensionally-optimised model, it can obtained using the dimensionally-optimised model as final
The boom model arrived is designed and produces according to the optimization design variable of the dimensionally-optimised model solved.
It should be noted that all or part of the steps of above-described embodiment can be realized by common design software, example
Such as ANSYS.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of design method of suspension arm of crane, which is characterized in that the described method includes:
Construct the initialization geometrical model of boom；
The geometry mid-plane model of the boom is generated according to the initialization geometrical model；
The geometry mid-plane model is carried out using FInite Element discrete；
Receive it is discrete after the geometry mid-plane model boundary condition, to obtain finite element model；
The finite element model is solved, to obtain performance requirement parameter；
Calculation of Sensitivity model is established, it, will be described using the performance requirement parameter as the function of the Calculation of Sensitivity model
Independent variable of the plate thickness of boom as the Calculation of Sensitivity model；
The Thickness range for setting each plate of the boom chooses the more of each plate in the value range
A Thickness Test numerical value；
According to the Thickness Test numerical value and Calculation of Sensitivity model of each plate, the sensitive of each plate is calculated
Spend variable quantity；
According to the change of sensitivity amount, key plate is determined, the key plate is sensitivity described in all plates
The maximum plate of variable quantity；
Optimization design variable, optimization constraint condition and optimization aim are received, it is described to obtain the dimensionally-optimised model of the boom
Optimization design variable is the thickness of the crucial plate；
Solve the dimensionally-optimised model.
2. the method according to claim 1, wherein described choose each plate in the value range
Multiple Thickness Test numerical value, comprising:
By any method of sampling in whole sampling methods, fractional-sample method, Latin Hypercube Sampling method, in the value model
Enclose the middle multiple Thickness Test numerical value for choosing each plate.
3. the method according to claim 1, wherein the initialization geometrical model of the building boom, comprising:
Receive the construction profile and dimensional parameters of the boom；
The initialization geometrical model of the boom is generated according to the construction profile and the dimensional parameters.
4. the method according to claim 1, wherein described generate in geometry according to the initialization geometrical model
Surface model, comprising:
Generate the middle face of each steel plate in the initialization geometrical model；
Geometry mid-plane model is generated according to the middle face of each steel plate.
5. the method according to claim 1, wherein the boundary condition includes the maximum load that the boom is born
Lotus and freedom degree.
6. the method according to claim 1, wherein the optimization design variable, the optimization constraint condition and
For the optimization aim according to the performance requirement parameter setting, the performance requirement parameter includes the rigidity of structure, structural strength, humorous
Vibration frequency, stability and total weight.
7. the method according to claim 1, wherein the optimization constraint condition is the structural strength of the boom
Make with stability, the optimization aim is the total weight of the boom.
8. the method according to claim 1, wherein the method also includes:
Receive the boundary condition of the dimensionally-optimised model, the boundary condition of the dimensionally-optimised model and it is described it is discrete after institute
The boundary condition for stating geometry mid-plane model is identical；
Check the dimensionally-optimised model.
9. according to the method described in claim 8, it is characterized in that, described check the dimensionally-optimised model, including check institute
State the structural strength of dimensionally-optimised model.
10. according to the method described in claim 8, it is characterized in that, it is described check the dimensionally-optimised model after, it is described
Method further include:
The partial structurtes of the dimensionally-optimised model are adjusted according to check result.
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| CN113065182A (en) * | 2021-02-19 | 2021-07-02 | 中铁第一勘察设计院集团有限公司 | BIM-based urban rail transit platform door system engineering design method |
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