CN108170970A - A kind of quick method for establishing vehicle statistics energy model based on VAOne - Google Patents
A kind of quick method for establishing vehicle statistics energy model based on VAOne Download PDFInfo
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- CN108170970A CN108170970A CN201810014479.2A CN201810014479A CN108170970A CN 108170970 A CN108170970 A CN 108170970A CN 201810014479 A CN201810014479 A CN 201810014479A CN 108170970 A CN108170970 A CN 108170970A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
Abstract
The present invention provides a kind of quick method for establishing vehicle statistics energy model based on VAOne, and the 3D models of automobile are directed into Hypermesh；3D models are subjected to GTD model；Model after cleaning is divided into different sub-systems component；Different sub-systems component progress mesh generation is obtained into finite element model；An attribute is established respectively for different sub-systems component, while establishes corresponding material properties information；The finite element model is exported to the file of corresponding Nastran types；Above-mentioned file is directed respectively into the different windows of VAOne；It establishes statistics energy model respectively in different windows, different statistics energy models is then copied into vehicle window respectively and is attached, the vehicle statistics energy model of completion improves modeling efficiency.
Description
Technical field
The present invention relates to a kind of quick methods for establishing vehicle statistics energy model based on VAOne.
Background technology
Vehicle statistics energy model conventional method is established in VA One is：1) import auto parts and components 3D models or
Finite element model without grid cleaning；If 2) 3D models, then the three-dimensional of each auto parts and components contour feature is inputted respectively
Coordinate value；If finite element model, then each subsystem is manually distinguished, directly create section in each subsystem borderline region respectively
Point；3) tablet is created according to the node of foundation and single-curvature plate obtains subsystem；4) by the statistics energy model of each subsystem
It is attached respectively, so as to obtain vehicle statistics energy model.
Traditional modeling method mainly has following two shortcomings：
1st, the accuracy and efficiency for establishing node is low.If 3D models, then need to obtain each auto parts and components profile spy
The D coordinates value of point is levied, for complex model workload bigger, while coordinate value differs surely accurate expression structure feature.If
It is finite element model, since the model of importing is without cleaning, is then difficult to distinguish different subsystems, chooses the side of node by hand
Formula also is difficult to ensure the accuracy of node, imports the vehicle finite element model do not cleared up, manual section molecular system (front wall, gusset,
Four, ceiling and ground panel subsystem etc.) and establish node accuracy it is very low while difficult, in addition no matter 3D models also
It is that finite element model can not check thickness data in VA One.
2nd, subsystem connection compatibility and poor reliability.It is manual selection during due to establishing node, therefore two different subsystems
It is unpaired that system is likely to occur greatly two connected subsystem nodes when being attached very much, needs to delete original subsystem and node simultaneously
New node and subsystem are re-established, repetitive operation could repeatedly connect reliable.
Invention content
The technical problem to be solved in the present invention is that providing a kind of quick vehicle of establishing based on VAOne counts energy mould
The method of type improves modeling efficiency.
The invention is realized in this way：A kind of quick method for establishing vehicle statistics energy model based on VAOne, including
Following steps：
The 3D models of automobile are directed into Hypermesh by step 1；
3D models are carried out GTD model by step 2；
Model after cleaning is divided into different sub-systems component by step 3；
Different sub-systems component progress mesh generation is obtained finite element model by step 4；
Step 5 establishes an attribute, while establish corresponding material properties information respectively for different sub-systems component；
Step 6 exports the finite element model to the file of corresponding Nastran types；
Above-mentioned file is directed respectively into the different windows of VAOne by step 7；
Step 8 establishes statistics energy model respectively in different windows, then that different statistics energy models is multiple respectively
It makes vehicle window to be attached, the vehicle statistics energy model of completion.
Further, the step 2 is specially further：3D models are subjected to GTD model, according to demand by 3D models
In geometrical curve, face and hole cleared up.
Further, attribute described in the step 5 is equipped with a corresponding attribute ID number.
Further, the step 6 is specially further：By the finite element model according to the attribute ID number export to
The files of corresponding Nastran types, while file is named with component part numbers, parts title and thickness information.
The invention has the advantages that：A kind of quick side for establishing vehicle statistics energy model based on VAOne of the present invention
Method reduces the time of Full Vehicle Modelling, improves automobile development efficiency；Improve the accuracy of VA One acoustics packet simulation calculations and reliable
Property.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the method for the present invention execution flow chart.
Specific embodiment
As shown in Figure 1, the present invention is based on the quick method for establishing vehicle statistics energy model of VAOne, including walking as follows
Suddenly：
The 3D models of automobile are directed into Hypermesh by step 1；
Step 2, by 3D models carry out GTD model, according to demand by geometrical curve, face and the hole in 3D models into
Row cleaning；
Model after cleaning is divided into different sub-systems component by step 3；
Different sub-systems component progress mesh generation is obtained finite element model by step 4；
Step 5 establishes an attribute, while establish corresponding material properties information, institute respectively for different sub-systems component
It states attribute and is equipped with a corresponding attribute ID number；
Step 6 exports the finite element model to the file of corresponding Nastran types according to the attribute ID number,
File is named with component part numbers, parts title and thickness information simultaneously；
Above-mentioned file is directed respectively into the different windows of VAOne by step 7；
Step 8 establishes statistics energy model respectively in different windows, then that different statistics energy models is multiple respectively
It makes vehicle window to be attached, the vehicle statistics energy model of completion.
The present invention improves conventional method, goes out model handling implement based on Hypermesh secondary development, no matter 3D
Model or finite element model can quickly establish node and subsystem, at the same can multiwindow establish subsystem, improve
The efficiency and accuracy of modeling.Specifically there are Optimal improvements at two：
Efficient model treatment tool.Different sub-systems finite element model shorthand nomenclature and export can be distinguished in VAOne
Different parts in subsystem are imported, by taking left front door as an example, side window, quarter window metal plate can be exported respectively by secondary development tool
5 finite element models such as gold, outside plate, inner panel 1, inner panel 2, while can be come with component part numbers+parts title+thickness information
Name.
Multiwindow parallel modeling.Different sub-systems can check in different windows, what real time inspection two subsystems matched
Node ensures the reliability of subsystem connection,
A kind of specific embodiment of the present invention：
Since vehicle parts are more, it is illustrated by taking left front door as an example here：
The 3D models of left front door are imported into Hypermesh, the form of 3D models can be with CATIA, PROE, UG etc.
Common CAD form.
3D models are subjected to GTD model, unrelated geometrical curve, face, inessential hole are cleared up, by cleaning
Make 3D model boundaries more regular, be conducive to followed by mesh generation and statistics energy modeling.
3D models are divided into different sub-systems component, it, will be every including side window, quarter window metal plate, outside plate, inner panel 1, inner panel 2
A subsystem component establishes a component (Component), and each component corresponds to a component ID number, respectively different subsystems
System component is put into different components, which needs to establish 5 components.
Different sub-systems component is subjected to mesh generation, mesh generation principle is to embody geometric properties, with digital-to-analogue compactness
It is high.
5 different sub-systems components are established into an attribute (Property) respectively, each attribute is for a Property ID
Number (PID), while material properties information (Material) is established respectively, each attribute and each material correspond to a group respectively
Part.
Using the tool based on Hypermesh secondary development by the subsystem component finite element model established according to difference
No. PID file (.bdf) for exporting to different Nastran types in, while believed with component part numbers+parts title+thickness
It ceases to name file, each file includes attribute and material properties information.
Be directed respectively into different VA One windows according to different sub-systems component, window 1 to window 5 be directed respectively into side window,
Quarter window metal plate, outside plate, inner panel 1, inner panel 2 correspond to side window in window 1, window 2 corresponds to quarter window metal plate, and window 3 corresponds to outer
Plate, window 4 correspond to inner panel 1, and window 5 corresponds to inner panel 5.
It establishes statistics energy model respectively in different windows, different statistics energy models is then copied to one respectively
A window is attached, the left front door statistics energy model of completion.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, our described specific embodiments are merely exemplary rather than for the restriction to the scope of the present invention, are familiar with this
The equivalent modification and variation that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (4)
- A kind of 1. quick method for establishing vehicle statistics energy model based on VAOne, it is characterised in that：Include the following steps：The 3D models of automobile are directed into Hypermesh by step 1；3D models are carried out GTD model by step 2；Model after cleaning is divided into different sub-systems component by step 3；Different sub-systems component progress mesh generation is obtained finite element model by step 4；Step 5 establishes an attribute, while establish corresponding material properties information respectively for different sub-systems component；Step 6 exports the finite element model to the file of corresponding Nastran types；Above-mentioned file is directed respectively into the different windows of VAOne by step 7；Step 8 establishes statistics energy model respectively in different windows, then copies to different statistics energy models respectively Vehicle window is attached, the vehicle statistics energy model of completion.
- 2. a kind of quick method for establishing vehicle statistics energy model based on VAOne as described in claim 1, feature exist In：The step 2 is specially further：By 3D models carry out GTD model, according to demand by 3D models geometrical curve, face And hole is cleared up.
- 3. a kind of quick method for establishing vehicle statistics energy model based on VAOne as described in claim 1, feature exist In：Attribute described in the step 5 is equipped with a corresponding attribute ID number.
- 4. a kind of quick method for establishing vehicle statistics energy model based on VAOne as claimed in claim 3, feature exist In：The step 6 is specially further：The finite element model is exported according to the attribute ID number to corresponding Nastran The file of type, while file is named with component part numbers, parts title and thickness information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109165453A (en) * | 2018-09-03 | 2019-01-08 | 奇瑞汽车股份有限公司 | A kind of parallelization modeling method in auto NVH exploitation |
| CN109492302A (en) * | 2018-11-09 | 2019-03-19 | 同济大学 | A kind of noise transmission path method for quickly identifying based on VAone secondary development |
| CN111767661A (en) * | 2019-03-12 | 2020-10-13 | 广州汽车集团股份有限公司 | Method, device and system for automatically generating finite element model of automobile body and computer storage medium |
| CN113553734A (en) * | 2020-04-24 | 2021-10-26 | 比亚迪股份有限公司 | VAONE-based modeling method, system, device and medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109165453A (en) * | 2018-09-03 | 2019-01-08 | 奇瑞汽车股份有限公司 | A kind of parallelization modeling method in auto NVH exploitation |
| CN109492302A (en) * | 2018-11-09 | 2019-03-19 | 同济大学 | A kind of noise transmission path method for quickly identifying based on VAone secondary development |
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| CN113553734A (en) * | 2020-04-24 | 2021-10-26 | 比亚迪股份有限公司 | VAONE-based modeling method, system, device and medium |
| CN113553734B (en) * | 2020-04-24 | 2023-11-14 | 比亚迪股份有限公司 | Modeling method, system, equipment and medium based on VAONE |
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