基于拓扑优化的新能源汽车摆臂轻量化设计

Lightweight design of new-energy automobile control arm based on topology optimization

为对某新能源车型前悬挂下摆臂进行结构轻量化设计,运用悬挂动力学模型提取摆臂各连接点在各工况下的静载荷,结合拓扑优化分析方法,获得摆臂的最佳传力路径和材料分布,明确轻量化优化方向。优化结果表明,优化后的摆臂强度满足设计要求,质量减小27%。

To the lightweight structure design for the control arm of front suspension of a new-energy automobile,the static loads of each attachment point of control arm under different working conditions are extracted using suspension dynamics model.Combining with topology optimization analysis method,the optimum force transfer path and material distribution of control arm are obtained,which can provide lightweight optimization direction for control arm.The optimization results show that the optimized control arm can meet the strength design requirement and the mass reduction is 27%.