The optimal design support system for shell components of vehicles using the methods of artificial intelligence

[摘要] The paper is devoted to an application of the evolutionary methods and the finite element method to the optimization of shell structures. Optimization of thickness of a car wheel (shell) by minimization of stress functional is considered. A car wheel geometry is built from three surfaces of revolution: the central surface with the holes destined for the fastening bolts, the surface of the ring of the wheel and the surface connecting the two mentioned earlier. The last one is subjected to the optimization process. The structures are discretized by triangular finite elements and subjected to the volume constraints. Using proposed method, material properties or thickness of finite elements are changing evolutionally and some of them are eliminated. As a result the optimal shape, topology and material or thickness of the structures are obtained. The numerical examples demonstrate that the method based on evolutionary computation is an effective technique for solving computer aided optimal design.

[发布机构] Institute of Computational and Mechanical Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, Poland^1

[效力级别] 能源学

[关键词] Computer aided;Evolutionary method;Fastening bolts;Optimal design;Shell structure;Surfaces of revolution;Triangular finite elements;Volume constraint