A multi-objective topology optimization for the control arm of vehicle suspension is conducted with the compliance (static state) under multi-conditions and the natural frequency of vibration (dynamic state) as objective functions. Based on the SIMP method of topology optimization and combining multilevel tolerant sequential programming approach with compromising programming scheme, first the frequency optimization under free vibration condition and then the compliance optimization at static condition are performed in sequence. Finally, a topological structure of control arm is obtained meeting the both requirements of minimum compliance at static state and highest low-order frequency under dynamic vibration.%以多工况下的柔度(静态)和振动固有频率(动态)为目标函数,对汽车悬架控制臂进行多目标拓扑优化.基于SIMP变密度的拓扑优化方法,将多级容差序列规划与折衷规划法相结合,首先进行自由振动工况下的频率优化,然后以此为基础进行静态工况下的柔度优化,最终得到了同时满足静态柔度最小和振动低阶频率最高要求的控制臂拓扑结构.
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