Abstract: To explore a new direction for lightweight design of automotive engine mounts based on topology optimization, 3D modeling is used to create a 3D model of the automotive engine mount. The material redundancy area of the part is obtained by analyzing the mechanical response of the part under actual usage conditions. Taking the material redundancy area as the design domain, a topology optimization analysis is conducted on the automotive engine bracket. The result shows that optimal mechanical transmission path for the part under actual usage conditions, thereby completing the reconstruction of the lightweight optimization model. By establishing an optimization model and conducting finite element analysis under actual operating conditions, the effectiveness of the optimization scheme is verified, and a lightweight design reference for automotive components is provided.

Key words: Automotive engine bracket; Topology optimization; Lightweight design; Finite element simulation

摘要： 为探究一种基于拓扑优化的汽车发动机支架轻量化设计的新方向，文章创建了汽车发 动机支架的三维模型，分析了零件在实际使用工况下的力学响应并得到了零件的材料冗余区 域。以材料冗余区域为设计域，对汽车发动机支架进行了拓扑优化分析，得到零件在实际使 用工况下的最佳力学传递路径，并完成了轻量化优化模型的重构。通过建立优化模型在实际 使用工况下的有限元分析，验证了优化方案的有效性，为汽车零部件轻量化设计提供了参考。

关键词: 汽车发动机支架；拓扑优化；轻量化设计；有限元仿真