CN109409023A - The optimization method of torsion BOX Model, system and storage medium after automobile based on CAE - Google Patents
The optimization method of torsion BOX Model, system and storage medium after automobile based on CAE Download PDFInfo
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Abstract
The invention discloses optimization method, system, storage medium and the electronic equipment of torsion BOX Model after a kind of automobile based on CAE, the optimization method of torsion BOX Model includes: to establish the Car body model for including at least rear torsion BOX Model after the automobile based on CAE；If being that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions so that dry analysis operating condition is arranged based on the Car body model；If being analyzed based on basic property of the dry analysis operating condition to the rear torsion BOX Model, with the optimization constraint condition of the rear torsion BOX Model under each analysis operating condition of determination；A closed cavity is surrounded along the outer profile of the rear torsion BOX Model, filling solid element is in Xiang Suoshu cavity to form design section.The present invention can greatly reduce the weight of rear torsion box, to meet vehicle light-weighted design object under the premise of the basic property of torsion box does not decline after guarantee.While saving design time, experimental cost can also be reduced.
Description
Technical field
The present invention relates to torsion box moulds after automotive parts manufacturing technology more particularly to a kind of automobile based on CAE
Optimization method, system, storage medium and the electronic equipment of type.
Background technique
New-energy automobile industry obtains vigorously supporting for national correlation department at present, and this index of course continuation mileage becomes group
Crowd chooses one of important references factor of new-energy automobile, while also increasingly tighter for the standard of the fuel consumption of fuel vehicle
Lattice, many factors promote automotive light weight technology technology to be increasingly taken seriously.
In terms of the material selection of automobile manufacture, in order to promote lightweight level, there is a large amount of steel-aluminium hybrid vehicle
Body, even all-aluminium body.The rear torsion box of automobile, the connection important as a vehicle body and load component, it is also more and more
Slave steel sheet metal component be changed into aluminium alloy castings.However, all disclosed data all show to carry out system for rear torsion box
The design and analysis and optimization method of property are all blank outs.
Summary of the invention
For the problems of the prior art, the purpose of the present invention is to provide torsion box moulds after a kind of automobile based on CAE
Optimization method, system, storage medium and the electronic equipment of type, can under the premise of the basic property of rear torsion box does not decline,
The weight of rear torsion box is greatly reduced, to meet the light-weighted design object of vehicle.
According to an aspect of the present invention, providing one kind, (i.e. Computer Aided Engineering is to use based on CAE
Computer Aided Solution complex engineering and product structure intensity, rigidity, buckling stability, dynamic response, heat transfer, three-dimensional more bodies
A kind of numerical approximation analysis of the problems such as optimization design of the analytical calculations of the mechanical properties such as contact, elastoplasticity and structural behaviour
Method) automobile after torsion BOX Model optimization method, it includes:
Establish the Car body model comprising rear torsion BOX Model；
It is that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to set based on the Car body model
If setting dry analysis operating condition；
If being analyzed based on basic property of the dry analysis operating condition to the rear torsion BOX Model, with each analysis of determination
The optimization constraint condition of the rear torsion BOX Model under operating condition；
The outer profile of torsion BOX Model surrounds a closed cavity after described, in Xiang Suoshu cavity filling solid element with
Form design section；
With the minimum optimization aim of weight and according to the optimization constraint condition, it is used alone and becomes for each analysis operating condition
Densimetry carries out the Topology Optimization Analysis to the design section of the rear torsion BOX Model, to obtain setting described in each analysis operating condition
Count the Topology Optimization Analysis result in region；
Torsion BOX Model after the Topology Optimization Analysis result reconstruct based on each analysis operating condition is described, to obtain rear torsion
First Optimized model of box.
It is described with the minimum optimization aim of weight and according to the optimization constraint condition in an embodiment of the present invention,
Density variable method is used alone for each analysis operating condition, the Topology Optimization Analysis is carried out to the design section of the rear torsion BOX Model,
To include: the step of obtaining the Topology Optimization Analysis result of the design section of each analysis operating condition
According to variable, objective function and the optimization constraint condition of rear torsion basis BOX Model described under each analysis operating condition to obtain
To the topological optimization model for corresponding to each analysis operating condition；
The topological optimization model is calculated to obtain the Topology Optimization Analysis result.
It is described based on the Topology Optimization Analysis result reconstruct rear torsion box mould in an embodiment of the present invention
Type, to include: the step of obtaining the first Optimized model of rear torsion box
The Topology Optimization Analysis result of each analysis operating condition is parsed；
Processing is overlapped to the Topology Optimization Analysis result after the parsing of each analysis operating condition；
It is simulated to obtain the arrangement of the reinforcing rib of rear torsion box according to the Topology Optimization Analysis result after superposition processing；
According to the arrangement of the reinforcing rib reconstruct rear torsion BOX Model, to obtain the first optimization of rear torsion box
Model.
In an embodiment of the present invention, by institute of the Path of Force Transfer to each analysis operating condition for drawing the design section
The Topology Optimization Analysis result is stated to be parsed.
It is described according to the arrangement of the reinforcing rib reconstruct rear torsion box mould in an embodiment of the present invention
Type, the step of to obtain the first Optimized model of rear torsion box after further include:
Thickness parameter optimization is carried out to the reinforcing rib based on first Optimized model, to obtain the second of rear torsion box
Optimized model.
It is described to be based on first Optimized model in an embodiment of the present invention, thickness ginseng is carried out to the reinforcing rib
Number optimization, the step of to obtain the second Optimized model of rear torsion box after further include:
Analysis verifying is carried out based on basic property of the analysis operating condition to the second Optimized model of the rear torsion box.
It is described that thickness parameter is carried out to the reinforcing rib based on first Optimized model in an embodiment of the present invention
The step of optimization includes:
Variable is set by the thickness of reinforcing rib；
Several gauge variations for choosing reinforcing rib generate test by the Latin hypercube or orthogonal matrix algorithm of optimization
Design sample, and sample calculating is carried out one by one；
It is built based on the result that sample calculates by radial base neural net, oval base neural net or multistage response phase method
Vertical approximate regression models；
An optimization algorithm iterative search globally optimal solution is selected by the approximate regression models, with the determination reinforcing rib
Optimal thickness parameter.
Furthermore, the optimization algorithm is Hooke pattern search method, genetic algorithm or simulated annealing.
In an embodiment of the present invention, the basic property be mode, after touch, one in bending stiffness and torsion rigidity
Item is multinomial, and each analysis operating condition respectively corresponds a basic property.
It is described that binding side is created for the rear torsion BOX Model based on the Car body model in an embodiment of the present invention
If boundary's condition and several load-up conditions include: the step of dry analysis operating condition to be arranged
Model analysis operating condition is arranged using the method for calculating Free Modal, to the mode to torsion BOX Model after described into
Row analysis.
It is described that binding side is created for the rear torsion BOX Model based on the Car body model in an embodiment of the present invention
If boundary's condition and several load-up conditions include: the step of dry analysis operating condition to be arranged
Using the method setting Bending Stiffness Analysis operating condition and torsion stiffness analysis work for applying fixed constraint and concentrfated load
Condition, the Bending Stiffness Analysis operating condition are analyzed to the bending stiffness to the rear torsion BOX Model；The torsion rigidity
Analysis operating condition is analyzed to the torsion rigidity to the rear torsion BOX Model.
It is described that binding side is created for the rear torsion BOX Model based on the Car body model in an embodiment of the present invention
If boundary's condition and several load-up conditions include: the step of dry analysis operating condition to be arranged
Analysis operating condition is touched after discharging and applying the method setting of Equivalent Distributed load using inertia, to the rear torsion
Performance is touched after BOX Model to be analyzed.
It is described to establish the step of including the Car body model of rear torsion BOX Model and include: in an embodiment of the present invention
The material of torsion box is to be preset as aluminium alloy castings after will be described.
According to another aspect of the present invention, a kind of optimization system of torsion BOX Model after the automobile based on CAE is provided, it is wrapped
It includes:
Model building module, to establish the Car body model comprising rear torsion BOX Model；
Operating condition setup module is analyzed, to be that the rear torsion BOX Model creates restrained boundary item based on the Car body model
If part and several load-up conditions are to be arranged dry analysis operating condition；
Basic property analysis module, if to the basic property based on the dry analysis operating condition to the rear torsion BOX Model
It is analyzed, with the optimization constraint condition of the rear torsion BOX Model under each analysis operating condition of determination；
Design section forms module, to surround a closed cavity along the outer profile of the rear torsion BOX Model, to institute
It states and fills solid element in cavity to form design section；
Topological optimization module, to the minimum optimization aim of weight and according to the optimization constraint condition, for each
The design section progress the Topology Optimization Analysis that density variable method is used alone to the rear torsion BOX Model in operating condition is analyzed, it is every to obtain
The Topology Optimization Analysis result of the design section of one analysis operating condition；
First model reconstruction module, to reconstruct the rear torsion BOX Model based on the Topology Optimization Analysis result, with
Obtain the first Optimized model of rear torsion box.
Furthermore, the optimization system of torsion BOX Model further includes the second model reconstruction after the automobile based on CAE
Module and analysis authentication module, the second model reconstruction module is to be based on first Optimized model to the reinforcing rib
Thickness parameter optimization is carried out, to obtain the second Optimized model of rear torsion box；The analysis authentication module is to based on described point
Analysis operating condition carries out analysis verifying to the basic property of the second Optimized model of the rear torsion box.
According to another aspect of the invention, a kind of storage medium is provided, is stored with computer program on the storage medium,
The computer program executes step as described above when being run by processor
According to another aspect of the invention, a kind of electronic equipment is provided, the electronic equipment includes:
Processor；
Storage medium is stored thereon with computer program, executes such as when the computer program is run by the processor
The upper step.
The present invention carries out structural optimization analysis to rear torsion BOX Model in whole vehicle model using CAE technology, successively passes through
The independent the Topology Optimization Analysis of either simplex condition, result parsing superposition, thickness optimization analysis, and obtain the first of rear torsion box
Optimized model and the second Optimized model.The present invention can mismatch to avoid optimum results and vehicle body other structures, or optimization road
Diameter confusion is difficult to the problem of parsing, and can finally greatly reduce under the premise of the basic property of torsion box does not decline after guarantee
The weight of torsion box afterwards, to meet the light-weighted design object of vehicle.While saving design time, experiment can also be reduced
Cost.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon.
Fig. 1 is the flow chart of the optimization method of torsion BOX Model after automobile in one embodiment of the invention based on CAE.
Fig. 2 is the flow chart of the optimization method of torsion BOX Model after automobile in another embodiment of the present invention based on CAE.
Fig. 3 is the partial process view that first Optimized model is obtained in one embodiment of the invention.
Fig. 4 is the partial process view that second Optimized model is obtained in one embodiment of the invention.
Fig. 5 is the structural schematic diagram of the optimization system of torsion BOX Model after automobile in one embodiment of the invention based on CAE.
Fig. 6 is the structural representation of the optimization system of torsion BOX Model after automobile in another embodiment of the present invention based on CAE
Figure.
Fig. 7 is the structural schematic diagram of computer readable storage medium in one embodiment of the invention.And
Fig. 8 is the structural schematic diagram of electronic equipment in one embodiment of the invention.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein.On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.It is identical attached in figure
Icon note indicates same or similar structure, thus will omit repetition thereof.
Fig. 1 is the flow chart of the optimization method of torsion BOX Model after automobile in one embodiment of the invention based on CAE.According to
An aspect of of the present present invention provides a kind of optimization method of torsion BOX Model after the automobile based on CAE, as shown in Figure 1, in the present invention
An embodiment in, the optimization method includes:
S110, the Car body model comprising rear torsion BOX Model is established.
According to the rear torsion box mould that actual connection type between rear torsion box and the other components of vehicle body is in Car body model
Type establishes welding and gluing connection relationship.
It is described to establish the step of including the Car body model of rear torsion BOX Model and include: in an of the invention specific embodiment
The material of torsion box is to be preset as aluminium alloy castings after will be described.
It S120, is that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions based on the Car body model
If dry analysis operating condition is arranged.Furthermore, different restrained boundary conditions and load-up condition represent different analysis works
Condition.
If S130, being analyzed based on basic property of the dry analysis operating condition to the rear torsion BOX Model, with determination
The optimization constraint condition of the rear torsion BOX Model under each analysis operating condition.
Furthermore, the basic property be mode, after touch, it is one or more in bending stiffness and torsion rigidity,
Each analysis operating condition respectively corresponds a basic property.For example, model analysis operating condition is to the rear torsion BOX Model
Mode is analyzed.Bending Stiffness Analysis operating condition is analyzed to the bending stiffness to the rear torsion BOX Model.Torsion is rigid
Degree analysis operating condition is analyzed to the torsion rigidity to the rear torsion BOX Model.After touch analysis operating condition to turn round to after described
Performance is touched after power BOX Model to be analyzed.Optimization analysis is the model with basic property analysis as basic model, base
Plinth performance evaluation the result is that the optimization constraint condition of Optimized model.Such as one basic model bending stiffness be 20000N/m,
So optimization constraint condition is exactly bending stiffness not less than 20000N/m.Also a kind of situation is bending stiffness target value 20000N/
M, but the Bending Stiffness Analysis of basic model is the result is that 21500N/m, then when doing optimization analysis to basic model, optimization
Constraint condition is set as bending stiffness 20000N/m, meets target value requirement.
It is described that constraint is created for the rear torsion BOX Model based on the Car body model in a specific embodiment of the invention
If boundary condition and several load-up conditions include: the step of dry analysis operating condition to be arranged
Model analysis operating condition is created using the method for calculating Free Modal.
Optionally, using the method creation Bending Stiffness Analysis operating condition and torsion rigidity for applying fixed constraint and concentrfated load
Analyze operating condition.
Optionally, analysis operating condition is touched after discharging and applying the method creation of Equivalent Distributed load using inertia." inertia is released
Put " it may be considered a kind of method instead of fixed constraint, the setting in different finite element analysis softwares may not be identical.Example
It such as, is addition keyword: PARAM in NASTRAN (the structural finite element analysis software with height reliability),
INREL,-2." Equivalent Distributed load " refers to applies uniform load on back buffer beam, and direction is along X-axis towards headstock direction.
S140, the outer profile of torsion BOX Model surrounds a closed cavity after described, fills entity in Xiang Suoshu cavity
Unit is to form design section.In the forming process of the design section, torsion BOX Model and Car body model after keeping are needed
Connection relationship between middle other component model.
S150, with the minimum optimization aim of weight and according to the optimization constraint condition, it is independent for each analysis operating condition
The Topology Optimization Analysis is carried out using design section of the density variable method to the rear torsion BOX Model, to obtain each analysis operating condition
The Topology Optimization Analysis result of the design section.It is possible thereby to effectively avoid rear torsion BOX Model can in optimization analytic process
Can occur because caused by multiple analysis operating condition hybrid optimizations optimum results it is unintelligible, it is difficult to the problem of parsing.The present invention can
With the structure design of torsion box after greatly optimizing, it is set to play maximum effect in body performance, and predict whether to deposit
In the risk destroyed, unreasonable design is improved in time, while design time can be shortened, reduces experimentation cost.
It is described to constrain item with the minimum optimization aim of weight and according to the optimization in a specific embodiment of the invention
Part is used alone density variable method for each analysis operating condition and carries out topological optimization point to the design section of the rear torsion BOX Model
Analysis, to include: the step of obtaining the Topology Optimization Analysis result of the design section of each analysis operating condition
By setting the variable of the rear torsion basis BOX Model, objective function and optimization constraint condition under each analysis operating condition
To obtain corresponding to the topological optimization model of each analysis operating condition；
The topological optimization model is calculated to obtain the Topology Optimization Analysis result.
S160, based on the Topology Optimization Analysis result reconstruct it is described after torsion BOX Model, to obtain the of rear torsion box
One Optimized model.
Fig. 3 is the partial process view that first Optimized model is obtained in one embodiment of the invention.As shown in figure 3, described
Based on the Topology Optimization Analysis result reconstruct rear torsion BOX Model, to obtain the step of the first Optimized model of rear torsion box
Suddenly include:
S210, the Topology Optimization Analysis result of each analysis operating condition is parsed；
S220, processing is overlapped to the Topology Optimization Analysis result after the parsing of each analysis operating condition；
S230, it is simulated to obtain the arrangement side of the reinforcing rib of rear torsion box according to the Topology Optimization Analysis result after superposition processing
Formula；
S240, according to the reconstruct of the arrangement of the reinforcing rib it is described after torsion BOX Model, to obtain the of rear torsion box
One Optimized model.
Furthermore, can by draw the Path of Force Transfer of the design section to the Topology Optimization Analysis result into
Row parsing.For example, in an embodiment of the present invention, analyzing two kinds of performances of mode and bending stiffness of torsion box.In mould
State is analyzed under operating condition, and the Path of Force Transfer by drawing the design section parses the Topology Optimization Analysis result, is obtained
To the first the Topology Optimization Analysis result.Under Bending Stiffness Analysis operating condition, by the Path of Force Transfer pair for drawing the design section
The Topology Optimization Analysis result is parsed, and the second the Topology Optimization Analysis result is obtained.So, by first topological optimization
The arrangement of result with the reinforcing rib of torsion box after the second the Topology Optimization Analysis result superposition processing, that is, analog is analyzed, thus
Obtain first Optimized model.
Fig. 2 is the flow chart of the optimization method of torsion BOX Model after automobile in another embodiment of the present invention based on CAE.?
In another embodiment of the present invention, as shown in Fig. 2, described according to the arrangement of the reinforcing rib reconstruct rear torsion box mould
Type, the step of to obtain the first Optimized model of rear torsion box after further include:
S170, thickness parameter optimization is carried out to the reinforcing rib based on first Optimized model, to obtain rear torsion box
The second Optimized model.
Fig. 4 is the partial process view that second Optimized model is obtained in one embodiment of the invention.As shown in figure 4, specific
For, it is described to include: to the step of reinforcing rib progress thickness parameter optimization based on first Optimized model
S310, variable is set by the thickness of reinforcing rib.
S320, several gauge variations for choosing reinforcing rib are generated by the Latin hypercube or orthogonal matrix algorithm of optimization
Experimental design sample, and sample calculating is carried out one by one.Wherein, the Latin hypercube (OSLH) of optimization is in common latin square experiment
On the basis of a kind of improved test design method, it increases some judgment basis and carrys out guarantee test sample in design space
It is uniformly distributed.And experimental design sample is also DOE, than if any 3 gauge variations, each thickness range can be 1,2,3,4, that
Permutation and combination has 4*4*4 kind, and each group so in multiple combinations is exactly an experimental design sample.
S330, radial base neural net, oval base neural net or multistage response are passed through based on the result that sample calculates
Face method establishes approximate regression models.
S340, an optimization algorithm iterative search globally optimal solution is selected by the approximate regression models, described in determination
The optimal thickness parameter of reinforcing rib, to obtain the second Optimized model of rear torsion box.Wherein, it is so-called it is global be also opposite complete
Office, search globally optimal solution may be considered finds most suitable one from all possible thickness parameter.
Furthermore, the optimization algorithm can be Hooke pattern search method, genetic algorithm or simulated annealing.
Certainly, as shown in Fig. 2, being based on first Optimized model described, it is excellent that thickness parameter is carried out to the reinforcing rib
Change, the step of to obtain the second Optimized model of rear torsion box after can also include:
S180, analyze based on basic property of the analysis operating condition to the second Optimized model of the rear torsion box and test
Card.Need at this time keep after original connection relationship and join domain cannot between torsion BOX Model and vehicle body other component model
Change, it is possible thereby to avoid causing calculated result unreliable because of model and in kind mismatch or even calculate the situation of mistake, it can
With the structure design of torsion box after greatly optimizing, it is set to play maximum effect in body performance, and predict whether to deposit
In the risk destroyed, unreasonable design is improved in time, while design time can be shortened, reduces experimentation cost.
If analysis verification result is shown, a certain or multinomial basic property of the second Optimized model of the rear torsion box is not able to satisfy use
Demand then can carry out new round optimization with return step S150.
Specifically, the basic property of second Optimized model of torsion box is carried out according to step S120 and S130 after will be described
Verification result is opened by arbitrary finite member the poster processing soft, can check the mould of rear torsion BOX Model entirety by analysis verifying
State, after touch, the performances such as bending stiffness and torsion rigidity.Emphasis assesses the intensity of rear torsion box, whether judges its stress
In the acceptable strength range of material, to guarantee to meet requirement, if verification result is unsatisfactory for requiring, then return step
S150 carries out new round optimization.The present invention it is possible to prevente effectively from rear torsion BOX Model be likely to occur in optimization analytic process because
Topological optimization result path is unintelligible and can not parse the scheme of processable manufacture, optimum results and former surrounding structure not
Match, the problems such as own wt is significantly increased in optimum results.And then the structure of torsion box designs after greatly optimizing, and makes
It plays maximum effect in body performance, and predicts whether there is the risk destroyed, and carries out in time to unreasonable design
It improves, while design time can be shortened, reduce experimentation cost.
The present invention carries out structural optimization analysis to rear torsion BOX Model in whole vehicle model using CAE technology, successively passes through
The independent the Topology Optimization Analysis of either simplex condition, result parsing superposition, thickness optimization analysis, and obtain the first of rear torsion box
Optimized model and the second Optimized model.The present invention can mismatch to avoid optimum results and vehicle body other structures, or optimization road
Diameter confusion is difficult to the problem of parsing.It can finally greatly reduce under the premise of the basic property of torsion box does not decline after guarantee
The weight of torsion box afterwards, to meet the light-weighted design object of vehicle.While saving design time, experiment can also be reduced
Cost.
Fig. 5 is the structural schematic diagram of the optimization system of torsion BOX Model after automobile in one embodiment of the invention based on CAE.
According to another aspect of the present invention, a kind of optimization system of torsion BOX Model after the automobile based on CAE is provided, of the invention one
In embodiment, as shown in figure 5, the optimization system 810 includes: model building module 801, analysis operating condition setup module 802, base
Plinth performance evaluation module 803, design section form module 804, topological optimization module 805 and the first model reconstruction module
806.The model building module 801 is to establish the Car body model comprising rear torsion BOX Model.Mould is arranged in the analysis operating condition
Block 802 is to be that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to set based on the Car body model
If setting dry analysis operating condition.If the basic property analysis module 803 is to the dry analysis operating condition based on described in the rear torsion box
The basic property of model is analyzed, with the optimization constraint condition of the rear torsion BOX Model under each analysis operating condition of determination.It is described
Design section forms module 804 to surround a closed cavity, Xiang Suoshu cavity along the outer profile of the rear torsion BOX Model
Interior filling solid element is to form design section.The topological optimization module 805 is to the minimum optimization aim of weight and root
According to the optimization constraint condition, density variable method is used alone to the design area of the rear torsion BOX Model for each analysis operating condition
Domain carries out the Topology Optimization Analysis, to obtain the Topology Optimization Analysis result of the design section of each analysis operating condition.It is described
First model reconstruction module 806 is to reconstruct the rear torsion BOX Model based on the Topology Optimization Analysis result, after obtaining
First Optimized model of torsion box.The present invention can be to avoid optimum results and vehicle body other structures mismatch or path optimizing
Confusion is difficult to the problem of parsing, and finally under the premise of the basic property of vehicle does not reduce, greatly reduces the weight of rear torsion box
Amount, to meet the light-weighted design object of vehicle.While saving design time, experimental cost can also be reduced.
Fig. 6 is the structural representation of the optimization system of torsion BOX Model after automobile in another embodiment of the present invention based on CAE
Figure.In another embodiment of the invention, as shown in fig. 6, the optimization system 820 is in addition to including model building module 801, dividing
It analyses operating condition setup module 802, basic property analysis module 803, design section and forms module 804, topological optimization module 805, with
And first except model reconstruction module 806, further includes the second model reconstruction module 807 and analysis authentication module 808.Described
Two model reconstruction modules 807 are to carry out thickness parameter optimization to the reinforcing rib based on first Optimized model, to obtain
Second Optimized model of torsion box afterwards.The analysis authentication module 808 is to be based on the analysis operating condition to the rear torsion box
The basic property of the second Optimized model carry out analysis verifying, the present invention is using CAE technology to rear torsion box in whole vehicle model
Model carries out structural optimization analysis, successively passes through the independent the Topology Optimization Analysis of either simplex condition, result parsing superposition, thickness optimization point
Analysis and etc., and obtain the first Optimized model and the second Optimized model of rear torsion box.The present invention can to avoid optimum results with
Vehicle body other structures mismatch or path optimizing confusion is difficult to the problem of parsing, and can not finally drop in the basic property of vehicle
Under the premise of low, the weight of rear torsion box is greatly reduced, to meet the light-weighted design object of vehicle.Saving design time
While, experimental cost can also be reduced.
In an exemplary embodiment of the present invention, a kind of computer readable storage medium is additionally provided, meter is stored thereon with
The vapour based on CAE described in any one above-mentioned embodiment may be implemented when being executed by such as processor in calculation machine program, the program
After vehicle the step of the optimization method of torsion BOX Model.In some possible embodiments, various aspects of the invention can be with
It is embodied as a kind of form of program product comprising program code, it is described when described program product is run on the terminal device
Program code is for making the terminal device execute torsion box after the above-mentioned automobile based on CAE based on abstract model of this specification
The step of various illustrative embodiments according to the present invention of the optimization method description of model.Thing is reported for repairment the invention enables user
Part is available to be automatically processed, to simplify speech recognition process；In the operating pressure for mitigating background service team, while can also
To promote user experience.
Fig. 7 is the structural schematic diagram of computer readable storage medium in one embodiment of the invention.Fig. 7 is described according to this hair
The program product 600 for realizing the above method of bright embodiment can use portable compact disc read only memory
(CD-ROM) it and including program code, and can be run on terminal device, such as PC.However, program of the invention
Product is without being limited thereto, and in this document, readable storage medium storing program for executing can be any tangible medium for including or store program, the program
Execution system, device or device use or in connection can be commanded.
Described program product 600 can be using any combination of one or more readable mediums.Readable medium can be can
Read signal medium or readable storage medium storing program for executing.Readable storage medium storing program for executing for example can be but be not limited to electricity, magnetic, optical, electromagnetic, infrared
The system of line or semiconductor, device or device, or any above combination.The more specific example of readable storage medium storing program for executing is (non-
The list of exhaustion) include: electrical connection with one or more conducting wires, portable disc, hard disk, random access memory (RAM),
Read-only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, the read-only storage of portable compact disc
Device (CD-ROM), light storage device, magnetic memory device or above-mentioned any appropriate combination.
The computer readable storage medium may include in a base band or the data as the propagation of carrier wave a part are believed
Number, wherein carrying readable program code.The data-signal of this propagation can take various forms, including but not limited to electromagnetism
Signal, optical signal or above-mentioned any appropriate combination.Readable storage medium storing program for executing can also be any other than readable storage medium storing program for executing
Readable medium, the readable medium can send, propagate or transmit for by instruction execution system, device or device use or
Person's program in connection.The program code for including on readable storage medium storing program for executing can transmit with any suitable medium, packet
Include but be not limited to wireless, wired, optical cable, RF etc. or above-mentioned any appropriate combination.
The program for executing operation of the present invention can be write with any combination of one or more programming languages
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It calculates and executes in equipment, partly executes on a user device, being executed as an independent software package, partially in user's calculating
Upper side point is executed on a remote computing or is executed in remote computing device or server completely.It is being related to far
Journey calculates in the situation of equipment, and remote computing device can pass through the network of any kind, including local area network (LAN) or wide area network
(WAN), it is connected to user calculating equipment, or, it may be connected to external computing device (such as utilize ISP
To be connected by internet).
The present invention carries out structural optimization analysis to rear torsion BOX Model in whole vehicle model using CAE technology, successively passes through
The independent the Topology Optimization Analysis of either simplex condition, result parsing superposition, thickness optimization analysis, and obtain the first of rear torsion box
Optimized model and the second Optimized model.The present invention can mismatch to avoid optimum results and vehicle body other structures, or optimization road
Diameter confusion is difficult to the problem of parsing.It can finally greatly reduce under the premise of the basic property of torsion box does not decline after guarantee
The weight of torsion box afterwards, to meet the light-weighted design object of vehicle.While saving design time, experiment can also be reduced
Cost.
In an exemplary embodiment of the present invention, a kind of electronic equipment is also provided, which may include processor,
And the memory of the executable instruction for storing the processor.Wherein, the processor is configured to via described in execution
Executable instruction executes the optimization method of torsion BOX Model after the automobile based on CAE described in any one above-mentioned embodiment
Step.
Person of ordinary skill in the field it is understood that various aspects of the invention can be implemented as system, method or
Program product.Therefore, various aspects of the invention can be embodied in the following forms, it may be assumed that complete hardware embodiment, complete
The embodiment combined in terms of full Software Implementation (including firmware, microcode etc.) or hardware and software, can unite here
Referred to as circuit, " module " or " system ".
Fig. 8 is the structural schematic diagram of electronic equipment in one embodiment of the invention.It is described according to the present invention referring to Fig. 8
This embodiment electronic equipment 400.The electronic equipment 400 that Fig. 8 is shown is only an example, should not be to of the invention real
The function and use scope for applying example bring any restrictions.
As shown, electronic equipment 400 is showed in the form of universal computing device.The component of electronic equipment 400 can wrap
It includes but is not limited to: at least one processing unit 410, at least one storage unit 420, (including the storage of the different system components of connection
Unit 420 and processing unit 410) bus 430, display unit 440 etc..
Wherein, the storage unit is stored with program code, and said program code can be held by the processing unit 410
Row, so that the processing unit 410 executes the optimization method part of torsion BOX Model after the above-mentioned automobile based on CAE of this specification
Described according to the present invention various illustrative embodiments the step of.For example, the processing unit 410 can be executed such as Fig. 1
Shown in step.
The storage unit 420 may include the readable medium of volatile memory cell form, such as random access memory
Unit (RAM) 4201 and/or cache memory unit 4202 can further include read-only memory unit (ROM) 4203.
The storage unit 420 can also include program/practical work with one group of (at least one) program module 4205
Tool 4204, such program module 4205 includes but is not limited to: operating system, one or more application program, other programs
It may include the realization of network environment in module and program data, each of these examples or certain combination.
Bus 430 can be to indicate one of a few class bus structures or a variety of, including storage unit bus or storage
Cell controller, peripheral bus, graphics acceleration port, processing unit use any bus structures in a variety of bus structures
Local bus.
Electronic equipment 400 can also be with one or more external equipments 500 (such as keyboard, sensing equipment, bluetooth equipment
Deng) communication, can also be enabled a user to one or more equipment interact with the electronic equipment 400 communicate, and/or with make
Any equipment (such as the router, modulation /demodulation that the electronic equipment 400 can be communicated with one or more of the other calculating equipment
Device etc.) communication.This communication can be carried out by input/output (I/O) interface 450.Also, electronic equipment 400 can be with
By network adapter 460 and one or more network (such as local area network (LAN), wide area network (WAN) and/or public network,
Such as internet) communication.Network adapter 460 can be communicated by bus 430 with other modules of electronic equipment 400.It should
Understand, although not shown in the drawings, other hardware and/or software module can be used in conjunction with electronic equipment 400, including but unlimited
In: microcode, device driver, redundant processing unit, external disk drive array, RAID system, tape drive and number
According to backup storage system etc..
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the present invention
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server or network equipment etc.) executes the above-mentioned of embodiment according to the present invention and is based on
The optimization method of torsion BOX Model after the automobile of CAE.
The present invention carries out structural optimization analysis to rear torsion BOX Model in whole vehicle model using CAE technology, successively passes through
The independent the Topology Optimization Analysis of either simplex condition, result parsing superposition, thickness optimization analysis, and obtain the first of rear torsion box
Optimized model and the second Optimized model.The present invention can mismatch to avoid optimum results and vehicle body other structures, or optimization road
Diameter confusion is difficult to the problem of parsing.It can finally greatly reduce under the premise of the basic property of torsion box does not decline after guarantee
The weight of torsion box afterwards, to meet the light-weighted design object of vehicle.While saving design time, experiment can also be reduced
Cost.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (17)
1. the optimization method of torsion BOX Model after a kind of automobile based on CAE characterized by comprising
Establish the Car body model for including at least rear torsion BOX Model；
If being that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to be arranged based on the Car body model
Dry analysis operating condition；
If being analyzed based on basic property of the dry analysis operating condition to the rear torsion BOX Model, with each analysis operating condition of determination
Under it is described after torsion BOX Model optimization constraint condition；
A closed cavity is surrounded along the outer profile of the rear torsion BOX Model, filling solid element is in Xiang Suoshu cavity to form
Design section；
With the minimum optimization aim of weight and according to the optimization constraint condition, variable density is used alone for each analysis operating condition
Method carries out the Topology Optimization Analysis to the design section of the rear torsion BOX Model, to obtain the design area of each analysis operating condition
The Topology Optimization Analysis result in domain；
Torsion BOX Model after the Topology Optimization Analysis result reconstruct based on each analysis operating condition is described, to obtain rear torsion box
First Optimized model.
2. the optimization method of torsion BOX Model after the automobile according to claim 1 based on CAE, which is characterized in that described
With the minimum optimization aim of weight and according to the optimization constraint condition, density variable method pair is used alone for each analysis operating condition
The design section of torsion BOX Model carries out the Topology Optimization Analysis after described, to obtain each design section for analyzing operating condition
The step of the Topology Optimization Analysis result includes:
According to variable, objective function and the optimization constraint condition of torsion basis BOX Model after described under each analysis operating condition to obtain pair
It should be in the topological optimization model of each analysis operating condition；
The topological optimization model is calculated to obtain the Topology Optimization Analysis result.
3. the optimization method of torsion BOX Model after the automobile according to claim 1 based on CAE, which is characterized in that described
Based on the Topology Optimization Analysis result reconstruct rear torsion BOX Model, to obtain the step of the first Optimized model of rear torsion box
Suddenly include:
The Topology Optimization Analysis result of each analysis operating condition is parsed；
Processing is overlapped to the Topology Optimization Analysis result after the parsing of each analysis operating condition；
It is simulated to obtain the arrangement of the reinforcing rib of rear torsion box according to the Topology Optimization Analysis result after superposition processing；
According to the arrangement of the reinforcing rib reconstruct rear torsion BOX Model, to obtain the first optimization mould of rear torsion box
Type.
4. the optimization method of torsion BOX Model after the automobile according to claim 3 based on CAE, which is characterized in that pass through
The Path of Force Transfer for drawing the design section parses the Topology Optimization Analysis result of each analysis operating condition.
5. the optimization method of torsion BOX Model after the automobile according to claim 3 based on CAE, which is characterized in that described
According to the arrangement of the reinforcing rib reconstruct rear torsion BOX Model, to obtain the step of the first Optimized model of rear torsion box
After rapid further include:
Thickness parameter optimization is carried out to the reinforcing rib based on first Optimized model, to obtain the second optimization of rear torsion box
Model.
6. the optimization method of torsion BOX Model after the automobile according to claim 5 based on CAE, which is characterized in that described
Based on first Optimized model, thickness parameter optimization is carried out to the reinforcing rib, to obtain the second optimization mould of rear torsion box
After the step of type further include:
Analysis verifying is carried out based on basic property of the analysis operating condition to the second Optimized model of the rear torsion box.
7. the optimization method of torsion BOX Model after the automobile according to claim 5 based on CAE, which is characterized in that described
Include: to the step of reinforcing rib progress thickness parameter optimization based on first Optimized model
Variable is set by the thickness of reinforcing rib；
Several gauge variations for choosing reinforcing rib generate experimental design by the Latin hypercube or orthogonal matrix algorithm of optimization
Sample, and sample calculating is carried out one by one；
It is established closely based on the result that sample calculates by radial base neural net, oval base neural net or multistage response phase method
Like regression model；
An optimization algorithm iterative search globally optimal solution is selected by the approximate regression models, most with the determination reinforcing rib
Excellent thickness parameter.
8. the optimization method of torsion BOX Model after the automobile according to claim 7 based on CAE, which is characterized in that described
Optimization algorithm is Hooke pattern search method, genetic algorithm or simulated annealing.
9. the optimization method of torsion BOX Model after the automobile according to claim 1 based on CAE, it is characterised in that: described
Basic property be mode, after touch, it is one or more in bending stiffness and torsion rigidity, each analysis operating condition respectively corresponds one
Item basic property.
10. the optimization method of torsion BOX Model after the automobile according to claim 9 based on CAE, it is characterised in that: described
It is that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to be arranged several points based on the Car body model
Analyse operating condition the step of include:
Model analysis operating condition is arranged using the method for calculating Free Modal, is divided to the mode to the rear torsion BOX Model
Analysis.
11. the optimization method of torsion BOX Model after the automobile according to claim 9 based on CAE, it is characterised in that: described
It is that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to be arranged several points based on the Car body model
Analyse operating condition the step of include:
Using the method setting Bending Stiffness Analysis operating condition and torsion stiffness analysis operating condition for applying fixed constraint and concentrfated load, institute
Bending Stiffness Analysis operating condition is stated to analyze to the bending stiffness to the rear torsion BOX Model；The torsion stiffness analysis work
Condition is analyzed to the torsion rigidity to the rear torsion BOX Model.
12. the optimization method of torsion BOX Model after the automobile according to claim 9 based on CAE, it is characterised in that: described
It is that the rear torsion BOX Model creates restrained boundary condition and several load-up conditions to be arranged several points based on the Car body model
Analyse operating condition the step of include:
Analysis operating condition is touched after discharging and applying the method setting of Equivalent Distributed load using inertia, to the rear torsion box mould
Performance is touched after type to be analyzed.
13. the optimization method of torsion BOX Model after the automobile according to claim 1 based on CAE, which is characterized in that described
Foundation the step of including the Car body model of rear torsion BOX Model includes:
The material of torsion box is to be preset as aluminium alloy castings after will be described.
14. the optimization system of torsion BOX Model after a kind of automobile based on CAE characterized by comprising
Model building module, to establish the Car body model comprising rear torsion BOX Model；
Analyze operating condition setup module, to based on the Car body model be it is described after torsion BOX Model create restrained boundary condition and
If several load-up conditions are to be arranged dry analysis operating condition；
Basic property analysis module, if to be carried out based on basic property of the dry analysis operating condition to the rear torsion BOX Model
Analysis, with the optimization constraint condition of the rear torsion BOX Model under each analysis operating condition of determination；
Design section forms module, to surround a closed cavity, Xiang Suoshu chamber along the outer profile of the rear torsion BOX Model
Filling solid element is in vivo to form design section；
Topological optimization module, to the minimum optimization aim of weight and according to the optimization constraint condition, for each analysis
Operating condition is used alone density variable method and carries out the Topology Optimization Analysis to the design section of the rear torsion BOX Model, to obtain each point
Analyse the Topology Optimization Analysis result of the design section of operating condition；And
First model reconstruction module, to reconstruct the rear torsion BOX Model based on the Topology Optimization Analysis result, to obtain
First Optimized model of torsion box afterwards.
15. torsion box optimization system after the automobile according to claim 14 based on CAE, which is characterized in that further include
Two model reconstruction modules and analysis authentication module, the second model reconstruction module is to be based on first Optimized model pair
The reinforcing rib carries out thickness parameter optimization, to obtain the second Optimized model of rear torsion box；The analysis authentication module to
Analysis verifying is carried out based on basic property of the analysis operating condition to the second Optimized model of the rear torsion box.
16. a kind of storage medium, which is characterized in that be stored with computer program, the computer program on the storage medium
The step as described in any one of claims 1 to 13 is executed when being run by processor.
17. a kind of electronic equipment, which is characterized in that the electronic equipment includes:
Processor；
Storage medium is stored thereon with computer program, and such as right is executed when the computer program is run by the processor
It is required that step described in any one of 1 to 13.
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