Abstract:

 A finite element model of the bus body frame was built and vibration modal analysis and static analysis were performed on the body frame structure. Then, the section sizes optimization was analyzed under three different load cases and the best bus body structure was obtained. The results confirmed that the synthetic optimization design method could carry out the optimization analysis in multi-load cases for bus body structure and lighten the weight of bus framework, and the bus body performance indexes such as strength, stiffness and mode.

Key words: bus body structure; multi-load case; structural optimization; synthetic analysis