CN1818914A - Simulating analysis of car with computer auxiliary - Google Patents
Simulating analysis of car with computer auxiliary Download PDFInfo
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- CN1818914A CN1818914A CN 200610049867 CN200610049867A CN1818914A CN 1818914 A CN1818914 A CN 1818914A CN 200610049867 CN200610049867 CN 200610049867 CN 200610049867 A CN200610049867 A CN 200610049867A CN 1818914 A CN1818914 A CN 1818914A
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Abstract
A computer assistant emulational analysis method for saloon car, the steps are: (1) choose the three-dimensional parameter module of the hanger or the entire car from the three-dimensional parameter module-base by the software interface of the ADMAS/View; (2) choose the proper tyre file and road file from the tyre file-base and the road file-base; (3) rework the design parameter; (4) make the emulational analysis in condition of emulational examination; (5) output emulational analysis result; (6) confirm the optimum design aim, optimize design the design variable. The beneficial effect of the invention is: utilize the computer technology, the theory of multi-dynamics and the examination standard of saloon car synthetically, to achieve the emulational analysis of the car capability in the dummy condition; utilize parameter modeling technology to reuse of the emulational analysis module; use the optimize design theory to achieve the optimize design of the car design parameter.
Description
Technical field
The utility model relates to the simulation analysis technical field in the computer technology, mainly is a kind of computer assisted simulating analysis of car that utilizes Virtual Prototype Technique.Traditional car test carries out after the trial-production of physics sample car, utilizes computer technology and car physical test method to combine and constitutes a kind of computer assisted traditional Chinese Painting distinguishing method between true and false, helps the designer to improve designing quality, improves design efficiency.
Background technology
In traditional the car design and manufacture process,, need to make sample car and test, when passing through test discovery defective, revise design again and also verify with model machine again in order to verify design.So the design cycle is long, and is slow to the reaction in market, the manufacturing cost height.Along with development of computer, the simulation analysis of computer technology is used for the car design just gradually, make the designer just can understand the various usabilities of car in the design phase, not only can shorten the Products Development cycle, and can also greatly improve the designing quality of product, thereby promote the competitive edge of enterprise.
At present, the dynamics simulation software that market provides is the common software towards all engineering goods simulation analysis, for the car analysis, specific aim is poor, the system operation complexity, the modeling workload is big, and the user is had very high professional technique requirement, be difficult to realize smooth man-machine interaction, limited the designer and at short notice numerous design proposals has been carried out comprehensively, synthetically investigated.
Therefore, the computer assisted simulating analysis of car in conjunction with computer technology, dynamics simulation technology and car test standard has very big market potential.
Summary of the invention
The present invention will solve the existing drawback that can not support well that rapid modeling and high-speed simulation are analyzed of common simulation analysis software technology, and a kind of area of computer aided simulating analysis of car based on parametric technology is provided, and improves designing quality and design efficiency.
The technical solution adopted for the present invention to solve the technical problems.This computer assisted simulating analysis of car, its step is as follows: (1) selects the three-dimensional parameterized model of car suspension or car load from three-dimensional parameterized master pattern storehouse by the ADMAS/View software interface; (2) from tire library and path file storehouse, select the path file of suitable tire file; (3) revise design parameter; (4) select the l-G simulation test condition, carry out simulation analysis; (5) output simulation analysis result; (6) determine the optimal design target, design variable is optimized design.
The effect that the present invention is useful is: at first the present invention fully utilizes computer technology, Multi-body Dynamics Theory and car test standard, realizes that the car performance simulation under the virtual environment is analyzed; Next utilizes parameterized modeling technology, realizes that the model of car simulation analysis is reused; And the optimizing application design theory, the optimal design of realization car design parameter.Be of value to and improve car design efficiency and quality, respond quick and various domestic and international market fast.
Description of drawings
Fig. 1 is the process flow diagram of car simulation analysis of the present invention;
Fig. 2 is the three-dimensional parameterized structure of models figure of the present invention;
Embodiment
The invention will be described further below in conjunction with accompanying drawing and example:
One, whole concept of the present invention:
The test method cost height of traditional physics sample car, cycle are long, have had a strong impact on the development of car design; The development of dynamics simulation technology, the polar region remedied above-mentioned deficiency, but because the system operation complexity, the modeling workload is big, and the user is had very high professional technique requirement, makes its application at the car design field that certain limitation be arranged.We utilize three-dimensional parameterized modeling and parametric simulation technology, realize rapid modeling and express-analysis; Use specialized menu and dialog box, make things convenient for the user in the car design process, to carry out simulation analysis; And the optimizing application design theory, be optimized design to relating to parameter.
Two, this area of computer aided simulating analysis of car of the present invention, its process flow diagram based on parameterized model as shown in Figure 1, its step is as follows:
1, chooses the three-dimensional parameterized model of suspension or car load
The three-dimensional parameterized model structure figure of suspension and car load is shown in 1.Coordinate figure (x with design point
i, y
i, z
i) be variable, the variable that characterizes part shape, size is write as the function of each design point coordinate, realizes the parametrization of part, parts and suspension, car load; Connecting, make up the kinematic relation between each part by constraint.
2, choose tire file and path file
Set or revise in the dialog box at tire, select design to select the tire file of tire and the path file of the category of roads that corresponding test is selected for use for use.Tire file and path file are stored in the standard database with the form of .tpf and .rdf.
3, input design parameter
According to designer's design result, in revising design reference point dialog box, import the coordinate figure (x of each design point
i, y
i, z
i), software is the parametrization rule of setting up according to setting up parameterized model, realizes the rapid modeling of suspension or car load fast.And the connected mode of appointment is determined the kinematic relation of parts.
4, select test condition to carry out simulation analysis
According to the testing requirements of suspension or car load, in the simulation analysis menu, select test condition, carry out kinematics or Dynamics Simulation Analysis, obtain the simulation analysis result.
5, optimize analysis
Optimize analyzing is the advanced analysis instrument of a kind of complexity of providing of software.In optimizing analytic process, can set the variation range of design variable, apply certain restriction and be in rational span to guarantee optimized design.Usually, optimizing problem analysis can be summed up as: satisfying in assorted and the variable change scope in appointment of various design bars, by automatically selecting design variable, asked for the maximal value or the minimum value of objective function by routine analyzer.
In the optimal design dialog box, the objective function of constitution optimization design, this function is deviser's a design object, can be expressed as the function of design variable; In the dialog box, further set the constraint condition of the design variable that needs qualification once more, in optimizing analytic process, program can automatically be adjusted design variable, to obtain maximum or minimum target function value.
Illustrate the using method of this method timer below:
What suppose that certain sedans front suspension selects for use is McPherson suspension, so, can in the master pattern storehouse, select the three-dimensional parameterized model of this kind standard, and press location point and other design parameter that parts such as swing arm, vibration damper, steering box, steering knuckle, spring are revised in designing requirement, obtain the consistent simulation analysis Suspension Model of suspension with designer's design; And then in the simulation analysis menu, the simulation analysis test under the virtual environment is carried out in the analytical test requirement that selection will be carried out, and obtains the change curve of corresponding different measuring function.At last, can be according to deviser's intention, as optimization aim, selected design variable is optimized design with the function of a certain measured value or some measurement.
The similar process of the process of car load simulation analysis and suspension simulation analysis.
Claims (2)
1, a kind of computer assisted simulating analysis of car, it is characterized in that: the three-dimensional parameterized master pattern storehouse of at first setting up different car suspensions and car load, foundation is used for tire standards library and the standard path library that virtual emulation is analyzed, above-mentioned java standard library can be expanded, the user can be in above-mentioned different java standard library, choose corresponding Suspension Model, the tire file, and path file, and adopt customized simulation analysis menu and dialog box, revise design parameter, set up simulation analysis model, select experiment condition, realize suspension and car load simulation analysis under the different tests requirement.
2, computer assisted simulating analysis of car according to claim 1 is characterized in that: the key step of realization:
1) user from three-dimensional parameterized master pattern storehouse, selects different suspensions or whole-car parameters model by software interface, obtains the visualization of 3 d model under the virtual environment;
2) utilize dialog box or menu, import the default value that each design parameter is revised java standard library, obtain the simulation analysis model of user's design;
3) from reason normative document storehouse, select path file, in the simulation analysis menu, selecting, select the content of simulation analysis, carry out simulation analysis, and the display analysis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049867 CN1818914A (en) | 2006-03-15 | 2006-03-15 | Simulating analysis of car with computer auxiliary |
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| CN 200610049867 CN1818914A (en) | 2006-03-15 | 2006-03-15 | Simulating analysis of car with computer auxiliary |
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| CN1818914A true CN1818914A (en) | 2006-08-16 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184304A (en) * | 2011-05-26 | 2011-09-14 | 江苏科技大学 | Co-simulation method of levelling system of hydraulic supporting platform based on virtual prototype |
| CN101877021B (en) * | 2009-12-28 | 2012-06-20 | 中国农业大学 | Method for automatically converting data among kinetic analysis, three-dimensional modeling and finite-element analysis software |
| CN104573163A (en) * | 2013-10-29 | 2015-04-29 | 广州汽车集团股份有限公司 | Automobile suspension parameterization design method |
| CN104573162A (en) * | 2013-10-29 | 2015-04-29 | 广州汽车集团股份有限公司 | Automobile suspension DMU (diesel multiple unit) model parameterization design method |
| CN105718607A (en) * | 2014-12-02 | 2016-06-29 | 广州汽车集团股份有限公司 | Suspension hard point optimization method based on K and C characteristics |
| CN104820682B (en) * | 2015-04-17 | 2019-04-16 | 中车青岛四方机车车辆股份有限公司 | A kind of bullet train demand data example construction method and device |
| CN111460588A (en) * | 2020-03-27 | 2020-07-28 | 上海电机学院 | Optimal design method for molded case circuit breaker operating mechanism |
-
2006
- 2006-03-15 CN CN 200610049867 patent/CN1818914A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877021B (en) * | 2009-12-28 | 2012-06-20 | 中国农业大学 | Method for automatically converting data among kinetic analysis, three-dimensional modeling and finite-element analysis software |
| CN102184304A (en) * | 2011-05-26 | 2011-09-14 | 江苏科技大学 | Co-simulation method of levelling system of hydraulic supporting platform based on virtual prototype |
| CN104573163A (en) * | 2013-10-29 | 2015-04-29 | 广州汽车集团股份有限公司 | Automobile suspension parameterization design method |
| CN104573162A (en) * | 2013-10-29 | 2015-04-29 | 广州汽车集团股份有限公司 | Automobile suspension DMU (diesel multiple unit) model parameterization design method |
| CN104573163B (en) * | 2013-10-29 | 2018-06-26 | 广州汽车集团股份有限公司 | A kind of automotive suspension parameterization design method |
| CN105718607A (en) * | 2014-12-02 | 2016-06-29 | 广州汽车集团股份有限公司 | Suspension hard point optimization method based on K and C characteristics |
| CN105718607B (en) * | 2014-12-02 | 2019-02-19 | 广州汽车集团股份有限公司 | A kind of suspension hard spot optimization method based on K&C characteristic |
| CN104820682B (en) * | 2015-04-17 | 2019-04-16 | 中车青岛四方机车车辆股份有限公司 | A kind of bullet train demand data example construction method and device |
| CN111460588A (en) * | 2020-03-27 | 2020-07-28 | 上海电机学院 | Optimal design method for molded case circuit breaker operating mechanism |
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