轻型货车车架的多目标稳健优化设计

Robust and multipurpose optimum design of light-truck

建立轻型货车车架的有限元模型,把稳健优化设计方法和有限元方法相结合,在保证车架强度、刚度和一阶扭转模态达到设计要求的前提下,实现轻型货车车架的轻量化。并且使得车架的刚度、强度和一阶扭转模态对于设计变量不敏感,提高车架的稳健性。

A finite element model of a frame is established using the software of hypermesh for the light-truck. Combine methods of robust and finite element .Aiming at the minimum total mass. Maintain torsional stiffness great than 6000MPa ,maximum strength less than 120MPa at the same time.