发动机悬置支架模态提升与轻量化设计

发动机悬置支架是动力总成系统中的重要零部件,对于汽车的NVH性能有着重要影响。文章基于某款皮卡车的动力总成悬置车身端支架一阶模态频率不达标的问题,提出优化方案,通过拓扑优化对结构进行减重分析,优化后车身端悬置支架结构不仅模态频率达到了设计要求,还实现了该悬置支架的轻量化设计。计算结果表明了本分析优化方法的有效性,该研究对于车身端悬置支架及车身上其他零部件设计都具有一定的参考意义。

Modal Improvement and Lightweight Design of Engine Mount Bracket

Engine mounting bracket is an important part of powertrain system,which has an important influence on the NVH performance of the automobile. In this article,based on a certain kind of pickup truck powertrain mount body end bracket whose first order modal frequency is substandard,the optimization scheme is put forward. Through analyzing the structure of topology optimization for weight loss,the optimized body side mount bracket structure modal frequency not only reaches the design requirement,but also realizes the lightweight of mount bracket design. The calculation result shows that the optimization method is effective,and the work has certain reference significance for the design of the suspension bracket and other parts of the body.