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A method and system for wireframe representation and deformation of a three-dimensional model of a vehicle body structure

A 3D model and wireframe representation technology, applied in 3D modeling, image data processing, special data processing applications, etc., can solve problems such as grid model robustness, and avoid time-consuming and labor-intensive effects

Active Publication Date: 2018-12-25
DALIAN UNIV OF TECH
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Problems solved by technology

However, automatic generation of mesh models from geometrically complex CAD models has robustness issues

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  • A method and system for wireframe representation and deformation of a three-dimensional model of a vehicle body structure
  • A method and system for wireframe representation and deformation of a three-dimensional model of a vehicle body structure
  • A method and system for wireframe representation and deformation of a three-dimensional model of a vehicle body structure

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Embodiment Construction

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] Such as figure 1 As shown, a wireframe representation and deformation method of a three-dimensional model of a vehicle body structure includes the following steps:

[0062] S1. Extracting subgraph models of beam components and plate components in the 3D model of the car body to be analyzed;

[0063] S2. According to the connection re...

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Abstract

The invention provides a wireframe representation and deformation method and system of a three-dimensional model of a vehicle body structure. The method of the invention comprises the following stepsof: extracting a beam component and a sub-graph model of a plate component in a three-dimensional model of a vehicle body to be analyzed; according to the connection relationship between beam and plate in the body structure, the extracted sub-graph models being assembled to obtain the initial graph model corresponding to the body structure; the initial graph model being simplified to a wireframe model; completing the deformation of the wireframe model by a mesh deformation method based on Laplace coordinates; based on the deformation method of radial basis function, the deformation of three-dimensional model of automobile body structure being completed. The invention can quickly obtain the adjusted finite element model in the process of optimizing the body structure design, and avoids thetime-consuming and labor-consuming behavior of the professional and technical personnel in manually re-modeling. Based on the above reasons, the invention can be widely popularized in the field of thebody structure design.

Description

technical field [0001] The invention relates to the field of vehicle body structure design, in particular to a wireframe representation and deformation method and system for a three-dimensional model of the vehicle body structure. Background technique [0002] With the continuous improvement of lightweight and safety requirements, how to improve the structural performance index of the designed body structure has become a key issue in body design. Using optimization design technology can effectively solve the above problems. When performing structural optimization design, it is generally required to provide multiple sets of models to calculate the sensitivity or shape update method of the structure. [0003] The body structure generally adopts finite element analysis model or isogeometric analysis model for structural mechanics simulation analysis. In order to update the analysis model, the shape change of the vehicle structure analysis model is obtained mainly through manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/20
CPCG06T17/20G06F30/23G06F30/15Y02T90/00
Inventor 胡平夏阳杨磊李宝军
Owner DALIAN UNIV OF TECH
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