关键词: 车身设计, 概念设计, 计算机辅助工程, 优化, 模板法, 系统集成

Abstract: An integrated design system for vehicle body structure VCD-ICAE, which implemented integration of body geometry modeling, analysis and optimization was proposed to overcome vehicle disadvantages generated in the concept design process. The system was based on Computer Aided Engineering(CAE) technology, other technologies were also included in the system such as template technology, parametric technology and optimization technology. It provided support for the entire design process of vehicle body structure, parametric body geometry model and Finite Element Methods(FEM) mesh model were constructed rapidly and automatically. The body's stiffness and modal were calculated and verified by the system. The parametric optimization and shape optimization of section were implemented to improve the performance of vehicle body. The system could afford the most optimal plan for body design and support all phases of concept body design effectively. Characteristics, function and flowchart of the system were also introduced. At last, the system was proved to be valid by an actual car design.

Key words: vehicle body design, concept design, computer aided engineering, optimization, template method, system integration