CN107169211A - Automobile body-in-white early stage concept development Topology Optimization Method - Google Patents
Automobile body-in-white early stage concept development Topology Optimization Method Download PDFInfo
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- CN107169211A CN107169211A CN201710360585.1A CN201710360585A CN107169211A CN 107169211 A CN107169211 A CN 107169211A CN 201710360585 A CN201710360585 A CN 201710360585A CN 107169211 A CN107169211 A CN 107169211A
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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
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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
- G06F30/15—Vehicle, aircraft or watercraft design
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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 present invention relates to a kind of Topology Optimization Method of the white body early stage concept development of automobile technical field, propose a kind of method actively built based on parameterized model with the white body early stage concept manifold analysis of optimizing design and parsing of topological optimization, by actively building spatial model and referring to vehicle model, the model is done into topological optimization, then the result of topological optimization is resolved to and verified with reference in vehicle model, analysis result is updated again after checking is feasible next suboptimization is carried out into spatial model, iteration, until parsing the main Path of Force Transfer of white body.Instruct body-in-white structure to design by the final Path of Force Transfer of the invention parsed, disclosure satisfy that white body Essential Performance Requirements.
Description
Technical field
It is particularly a kind of main the present invention relates to a kind of optimization method of the white body early stage concept development of automobile technical field
The dynamic optimization method for building and changing model.
Background technology
At present, auto industry is fast-developing, and research and development are the key foundations of auto industry, and early development is whole research and development stream again
The most important thing in journey, in current development process, major vehicle enterprises are all increasing the input of early stage research and development, strive grinding
The discovery as much as possible of hair early stage simultaneously solves problem, the efficiency and quality of whole processes of research ＆ development is improved with this, so as to effectively drop
The cost and risk of low whole processes of research ＆ development.And in being researched and developed in early stage, white body early stage concept manifold optimization design is again
The first step in early development, can play important impulse for the design of vehicle topological structure.At present, in early stage R＆D process
In, for the design of white body, often because input condition, timing node and instrument are used etc. the reason for various factors limits,
Effective white body early stage concept manifold optimization design can not be carried out, so as to cause vehicle can not in topological structure aspect
Sufficiently proved, i.e., structural engineer can not also obtain the performance point of the manifold of correlation in the exploitation design of early stage
Result input is analysed, causes that work blindness is larger and the design cycle is longer.Equally, CAE engineer can not obtain again in design early stage
CAD spaces completely and structural model are obtained, so as to body structure can not be analyzed and optimized so that can not in research and development early stage
The problem of quick discovery vehicle body overall architecture aspect, and then it is difficult to the suggestion to stage proposition validity, it is impossible to effective guarantee
Follow-up design requirement.In the Earlier designs of automobile body-in-white, generally require to consider that vehicle body collision, top pressure, rigidity etc. are a variety of
The performance requirement of complex working condition so that designer is difficult to design the body structure that mass is small, performance is excellent within a short period of time, from
And hinder the development of the product positive development layout strategy of " analysis-driven design ".
In white body early development flow, the development process and optimized algorithm of different enterprises are each variant, optimization efficiency
Also respectively there is a quality, and optimum results are difficult to timely and effectively provide for engineering actual items and provided powerful support for sometimes.Therefore in reality
, it is necessary to which the ripe exploitation Optimizing Flow of complete set improves design efficiency in vehicle body early development, timely feedback optimized result
And body structure design language is converted into, so as to apply in Vehicle Body Development.In the early stage conceptual design rank of white body
Section, because input data is less, using the means in traditional development process, CAD engineer can not build complete white body mould
Type, so cause CAE engineer from deployed configuration analysis optimization in time work, so just considerably increase the R＆D cycle with
And development cost.
The content of the invention
In order to overcome the shortcoming of prior art, herein in conjunction with the thought of Equivalent Static load, propose a kind of based on parametrization
Model actively builds the method with the white body early stage concept manifold analysis of optimizing design and parsing of topological optimization.This method
Using body shape and general arrangement parameter as input condition, vehicle body Parametric space topological model and ginseng are set up using Parameterized Software
Vehicle model is examined, volume mesh is carried out in pre-processing software and is divided and operating mode loading, topological optimization software is recycled to space topological
Model and the multidisciplinary topological optimization that the operating modes such as a variety of collision operating modes, top pressure and a variety of rigidity are accounted for reference to vehicle model,
Then topological optimization result is effectively parsed using Parameterized Software.
The present invention is achieved through the following technical solutions, and the present invention comprises the following steps：First, with body shape and
General arrangement parameter is input condition, actively builds manifold model and refers to vehicle model；Second, optimum results are being referred into car
Middle parsing is simultaneously verified；3rd, real time modifying updates spatial model and refers to vehicle model, and to its suboptimization again；4th, Ke Yili
With Parameterized Software to being changed many times by spatial model and with reference to vehicle model, Optimized Iterative.
Carry out early development to be efficient, the optimum results of fast resolving concept manifold are soft using parametric modeling
Part carries out early stage conceptual structure model and builds and can solve the above problems well.Parametric modeling software is designed using analysis-driven
Theory, can be in the case of no CAD model, using few including vehicle basic size, overall layout requirements or moulding face etc.
The abstract input data of amount, quick forward direction sets up structural model.So that CAE is not only verification tool in research and development of products flow
Role, be really achieved and start just play engineer directive function in earlier stages of design, and utilize earlier design phase
The larger advantage in design space seeks more more excellent design solutions.
Based on general arrangement space requirement, profile data, CAS data or other reference numbers provided with reference to vehicle body design department
According to etc., using the modular feature of parametric modeling software parametersization, it can quickly set up the 3d space mould of vehicle body topological optimization
Type, the conceptual phase early stage main optimal layout simulated with 3D solid elements, material distribution is found by topological optimization.
The characteristics of manifold optimizes is early stage, macroscopic view, concept.Building topology spatial model must is fulfilled for general arrangement first
Requirements (such as overall dimensions of a car, hard spot position), CAS faces inside and outside such as stage is existing must then are fulfilled for inside and outside CAS faces
It is required that.Secondly according to the parameterized model or other realistic models for reference built parallel, 3d space model must be complete
" envelope " actual 2D grid cell models.Last 3d space model needs are simple in construction directly perceived, can carry out quickly adjustment and repair
Change.Because the 3d space model that Parameterized Software is built is parameterized model, flexibility is high, when general arrangement data change
When, 3d space model can realize that fast parameterization is changed, and greatly reduce the pre-treatment time of manifold model.
According to every demand (such as overall layout requirements) of vehicle early development, complete firm towards vehicle body using optimization software
The early stage concept topology optimization design and parsing work of the vehicle body frames (load transfer path) of multi-state such as degree, collision and loss of weight
Make.Determine the load input working condition requirement of the overall topological optimization of vehicle body, including but not limited to vehicle body torsion, bending, front curve,
Afterwards bending, the torsion of back door opening, overall with central collision, ODB offset collisions, side collision, Flank Pole hit, top pressure, after touch.
The beneficial effects of the invention are as follows：The vehicle body early stage concept manifold obtained based on this method optimizes topological optimization knot
Fruit can not only meet engineering design requirements well, and can significantly shorten the exploitation design cycle, with higher engineering
Practical value.
Brief description of the drawings
Fig. 1 is flow chart of the invention.
Embodiment
Embodiments of the invention are elaborated with reference to accompanying drawing, the present embodiment is given premised on technical solution of the present invention
Go out detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment
Embodiments of the invention are as shown in Figure 1.According to every demand (such as overall layout requirements) of vehicle early development, profit
The morning towards the vehicle body frame (load transfer path) of the multi-states such as body stiffness, collision and loss of weight is completed with topological optimization software
Phase concept topology optimization design and parsing work.Model is set up in parametric modeling software, is imported into pre-processing software, profit
Panel, which is defined, with optimization defines optimized variable, constraint and target and Optimal Parameters；Then submit in topological optimization software and carry out
Structural analysis and optimization；Finally topological optimization result is effectively parsed using parametric modeling software.
Determine the load input working condition requirement of the overall topological optimization of vehicle body, including but not limited to vehicle body reverse, it is bending, antecurvature
Bent, rear bending, the torsion of back door opening, overall with central collision, ODB offset collisions, side collision, Flank Pole are hit, top pressure, after touch.
The flow of topology optimization design includes：1) model treatment；2) multiobjective topology optimization；3) optimum results Analysis and Screening
And checking.
1st, model treatment
Initial model is built according to vehicle body design space.According to the mark post car or former identical platform vehicle of exploitation vehicle,
On the basis of various collision simulation analyses are carried out to it, equivalence static load is extracted, is released by adding equivalence static load with inertia
Discharge technique realizes the equivalent of collision operating mode.
For more preferable simulation real vehicle model, it can be defined the correlated quality in real vehicle is integrated in the form of quality point
Set, the quality point of definition include subframe quality integration, engine quality is integrated, battery quality is integrated, driver and other
Occupant's mass, front and rear tire and spare tyre quality, front/rear door quality etc., quality point position is determined according to the center-of-mass coordinate of input, profit
The flexible connection set up with RBE3 technologies between quality point and mount point, the definition for completing quality point is set.
2nd, multiobjective topology optimization
Because early stage topology phase almost can not directly define rigidity value, therefore with the strain energy minimization under each analysis operating mode
For object function, consider the subject such as a variety of rigidity and collision operating mode, form multidisciplinary multiobjective topology optimization model.Selection
Mass ratio is as constraint function, and the solid element in all manifold is design variable, takes into account left and right sides body construction
Symmetry, adds necessary process constraints, and topological optimization is carried out using topological optimization software.
3rd, optimum results Analysis and Screening
Because topological optimization result and constraint function (mass ratio) have direct relation, to ensure that topological optimization result is sane
Property, it is proposed that multiobjective topology optimization result of the different quality than under is calculated, and all topological optimization results of comprehensive reference are carried
Understand in lotus path.
Analysis and Screening is carried out to result, important load path is recognized, analysis result can form scheme, export to each dependent part
Door confirms, in the renewal of final application to model.
4th, optimum results parsing checking
As a result parsing is whole manifold optimization " an apt word added to clinch the point " stage.There is no correct analytic structure, entirely optimized
Journey does not have valuable.So needing the optimum results of comprehensive assessment concept manifold model, selection meets the concept of requirements
Topological project is resolved in parameterized model.Scheme parsing is that abstract 3D result of calculations are designed to comply with into every principle (work
Skill, manufacture etc.) actual body structure, and analyzed checking.
For the parsing of manifold model optimization result, the parsing of vehicle Path of Force Transfer and key area solution are broadly divided into
Analysis, by the parsing of the optimum results to vehicle manifold model under the effect of different operating modes, can be distributed clear according to material
The Path of Force Transfer of vehicle under each operating mode is found out clearly, thus just can more targetedly design vehicle framework, reasonably cloth
Put the crossbeam and longeron in whole vehicle model；Determine after vehicle framework, structure elucidation just carried out to key area according to optimum results,
I.e. according to the material distribution situation of key area, reasonable design reinforcement structure.By the organization plan of topology parsing, to try one's best
Meet engineering actual demand, therefore topological analysis result must be fed back into relevant departments in time in the project implementation, it is preferably topological
Parsing scheme, and export the results model after optimization.
Claims (7)
1. a kind of automobile body-in-white early stage concept development Topology Optimization Method, it is characterised in that comprise the following steps：First, with
Body shape and general arrangement parameter are input condition, actively build manifold model and refer to vehicle model；Second, optimization is tied
Fruit parses and verified in reference to car；3rd, real time modifying updates spatial model and refers to vehicle model, and to its suboptimization again；
4th, it is possible to use Parameterized Software to being changed many times by spatial model and with reference to vehicle model, Optimized Iterative.
2. automobile body-in-white early stage concept development Topology Optimization Method according to claim 1, it is characterised in that described
Optimum results are resolved in reference to car carries out volume mesh division and operating mode loading in pre-processing software, recycles topological optimization
Software accounts for many of the operating modes such as a variety of collision operating modes, top pressure and a variety of rigidity to space topological model and with reference to vehicle model
Subject topological optimization, is then effectively parsed using Parameterized Software to topological optimization result.
3. automobile body-in-white early stage concept development Topology Optimization Method according to claim 2, it is characterised in that the ginseng
Numberization modeling software uses the theory that analysis-driven is designed, can be in the case of no CAD model, using including the basic chi of vehicle
A small amount of abstract input data such as very little, overall layout requirements or moulding face, quick forward direction sets up structural model.
4. automobile body-in-white early stage concept development Topology Optimization Method according to claim 3, it is characterised in that build and open up
Flutter spatial model, first, to meet the requirements of general arrangement；Second, according to the parameterized model or other built parallel
Realistic model for reference, 3d space model must " envelope " actual 2D grid cell models completely；3rd, 3d space model
It is required that it is simple in construction directly perceived, quick redjustment and modification can be carried out.
5. automobile body-in-white early stage concept development Topology Optimization Method according to claim 4, it is characterised in that described
Initial model is built according to vehicle body design space, integrated be defined in the form of quality point of the correlated quality in real vehicle can be set
Put, the quality point of definition includes but is not limited to that subframe quality integration, engine quality are integrated, battery quality is integrated, driver
And other occupant's mass, front and rear tire and spare tyre quality, front/rear door quality, quality point position is determined according to the center-of-mass coordinate of input
Put, the flexible connection set up using RBE3 technologies between quality point and mount point, the definition for completing quality point is set.
6. automobile body-in-white early stage concept development Topology Optimization Method according to claim 5, it is characterised in that in many mesh
Mark in process of topology optimization, mass ratio may be selected as constraint function, the solid element in all manifold is design variable,
The symmetry of left and right sides body construction is taken into account, necessary process constraints are added, topology is carried out using topological optimization software
Optimization.
7. automobile body-in-white early stage concept development Topology Optimization Method according to claim 6, it is characterised in that in optimization
, it is necessary to calculate multiobjective topology optimization result of the different quality than under in interpretation of result screening process, and comprehensive reference is all opens up
Flutter optimum results and carry out load path deciphering.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107609282A (en) * | 2017-09-18 | 2018-01-19 | 广州汽车集团股份有限公司 | A kind of conceptual design method of body shell |
| CN107622161A (en) * | 2017-09-21 | 2018-01-23 | 金龙联合汽车工业（苏州）有限公司 | A kind of passenger train plan optimization method |
| CN108407746A (en) * | 2018-02-06 | 2018-08-17 | 北京汽车股份有限公司 | Automobile front grille structure optimization method and system |
| CN109063389A (en) * | 2018-09-28 | 2018-12-21 | 重庆长安汽车股份有限公司 | A kind of vehicle structure lightweight forward design method and system based on more performance constraints |
| CN109117532A (en) * | 2018-07-27 | 2019-01-01 | 江铃汽车股份有限公司 | Automotive light weight technology optimization method |
| CN109409023A (en) * | 2018-12-24 | 2019-03-01 | 爱驰汽车有限公司 | The optimization method of torsion BOX Model, system and storage medium after automobile based on CAE |
| CN109596365A (en) * | 2018-12-27 | 2019-04-09 | 重庆长安汽车股份有限公司 | A kind of sled test method for simulating offset collision |
| CN109977460A (en) * | 2019-02-14 | 2019-07-05 | 中国第一汽车股份有限公司 | A kind of multi-objective optimization design of power method based on vehicle body section parameter |
| CN110110374A (en) * | 2019-04-09 | 2019-08-09 | 爱驰汽车有限公司 | Conceptual phase body of a motor car forward design method, apparatus and system |
| CN111226219A (en) * | 2017-10-17 | 2020-06-02 | 杰富意钢铁株式会社 | Method and apparatus for analyzing shape optimization of laminated composite member |
| CN111976831A (en) * | 2020-08-13 | 2020-11-24 | 北京新能源汽车股份有限公司 | 3D printed steering knuckle, manufacturing method, suspension system and automobile |
| CN111994168A (en) * | 2020-08-13 | 2020-11-27 | 北京新能源汽车股份有限公司 | 3D printed steering knuckle, manufacturing method, suspension system and automobile |
| CN112084572A (en) * | 2020-08-05 | 2020-12-15 | 中国第一汽车股份有限公司 | Method for optimizing vehicle body section structure in vehicle body modeling stage |
| CN112417586A (en) * | 2020-10-22 | 2021-02-26 | 东风汽车集团有限公司 | Body-in-white optimization processing method, device and system for vehicle and storage medium |
| CN113408055A (en) * | 2021-06-25 | 2021-09-17 | 东风汽车集团股份有限公司 | Automobile frame structure optimization method |
| CN113673025A (en) * | 2020-05-15 | 2021-11-19 | 广州汽车集团股份有限公司 | Vehicle body structure modeling method and device and storage medium |
| CN114633803A (en) * | 2022-04-21 | 2022-06-17 | 东风商用车有限公司 | Integrally cast balance suspension beam based on material topology and manufacturing method thereof |
| CN117574552A (en) * | 2024-01-15 | 2024-02-20 | 中信戴卡股份有限公司 | Optimized integrated design method for wheels |
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Cited By (26)
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|---|---|---|---|---|
| CN107609282A (en) * | 2017-09-18 | 2018-01-19 | 广州汽车集团股份有限公司 | A kind of conceptual design method of body shell |
| CN107622161B (en) * | 2017-09-21 | 2021-04-20 | 金龙联合汽车工业（苏州）有限公司 | Passenger car structure optimization method |
| CN107622161A (en) * | 2017-09-21 | 2018-01-23 | 金龙联合汽车工业（苏州）有限公司 | A kind of passenger train plan optimization method |
| CN111226219B (en) * | 2017-10-17 | 2023-11-28 | 杰富意钢铁株式会社 | Shape optimization analysis method and shape optimization analysis device for laminated composite member |
| CN111226219A (en) * | 2017-10-17 | 2020-06-02 | 杰富意钢铁株式会社 | Method and apparatus for analyzing shape optimization of laminated composite member |
| CN108407746A (en) * | 2018-02-06 | 2018-08-17 | 北京汽车股份有限公司 | Automobile front grille structure optimization method and system |
| CN109117532A (en) * | 2018-07-27 | 2019-01-01 | 江铃汽车股份有限公司 | Automotive light weight technology optimization method |
| CN109117532B (en) * | 2018-07-27 | 2022-07-08 | 江铃汽车股份有限公司 | Automobile lightweight optimization method |
| CN109063389A (en) * | 2018-09-28 | 2018-12-21 | 重庆长安汽车股份有限公司 | A kind of vehicle structure lightweight forward design method and system based on more performance constraints |
| CN109409023A (en) * | 2018-12-24 | 2019-03-01 | 爱驰汽车有限公司 | The optimization method of torsion BOX Model, system and storage medium after automobile based on CAE |
| CN109596365A (en) * | 2018-12-27 | 2019-04-09 | 重庆长安汽车股份有限公司 | A kind of sled test method for simulating offset collision |
| CN109977460A (en) * | 2019-02-14 | 2019-07-05 | 中国第一汽车股份有限公司 | A kind of multi-objective optimization design of power method based on vehicle body section parameter |
| CN110110374A (en) * | 2019-04-09 | 2019-08-09 | 爱驰汽车有限公司 | Conceptual phase body of a motor car forward design method, apparatus and system |
| CN113673025A (en) * | 2020-05-15 | 2021-11-19 | 广州汽车集团股份有限公司 | Vehicle body structure modeling method and device and storage medium |
| CN112084572A (en) * | 2020-08-05 | 2020-12-15 | 中国第一汽车股份有限公司 | Method for optimizing vehicle body section structure in vehicle body modeling stage |
| CN111994168B (en) * | 2020-08-13 | 2023-09-01 | 北京新能源汽车股份有限公司 | Steering knuckle after 3D printing, manufacturing method, suspension system and automobile |
| CN111976831A (en) * | 2020-08-13 | 2020-11-24 | 北京新能源汽车股份有限公司 | 3D printed steering knuckle, manufacturing method, suspension system and automobile |
| CN111994168A (en) * | 2020-08-13 | 2020-11-27 | 北京新能源汽车股份有限公司 | 3D printed steering knuckle, manufacturing method, suspension system and automobile |
| CN111976831B (en) * | 2020-08-13 | 2023-08-22 | 北京新能源汽车股份有限公司 | Steering knuckle after 3D printing, manufacturing method, suspension system and automobile |
| CN112417586A (en) * | 2020-10-22 | 2021-02-26 | 东风汽车集团有限公司 | Body-in-white optimization processing method, device and system for vehicle and storage medium |
| CN113408055A (en) * | 2021-06-25 | 2021-09-17 | 东风汽车集团股份有限公司 | Automobile frame structure optimization method |
| CN113408055B (en) * | 2021-06-25 | 2022-11-29 | 东风汽车集团股份有限公司 | Automobile frame structure optimization method |
| CN114633803A (en) * | 2022-04-21 | 2022-06-17 | 东风商用车有限公司 | Integrally cast balance suspension beam based on material topology and manufacturing method thereof |
| CN114633803B (en) * | 2022-04-21 | 2022-12-23 | 东风商用车有限公司 | Integrally cast balance suspension beam based on material topology and manufacturing method thereof |
| CN117574552A (en) * | 2024-01-15 | 2024-02-20 | 中信戴卡股份有限公司 | Optimized integrated design method for wheels |
| CN117574552B (en) * | 2024-01-15 | 2024-03-15 | 中信戴卡股份有限公司 | Optimized integrated design method for wheels |
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Application publication date: 20170915 |