Abstract: The powertrain mounting bracket was being simulation analysis on the structural strength. According to the matching of the vehicle power system, the dynamic loads of the limit, typical and failure conditions were input, and 18 representative investigation conditions were integrated and selected. Combined with the fact that the powertrain mounting bracket is a traditional rubber suspension formed by vulcanization of rubber bushing into a main and auxiliary spring structure, the linear and nonlinear loads are introduced into the finite element simulation method to accurately express the force transmission and action relationship. According to the characteristics of structural profiles and loading conditions to be a set of systematic and diverse. Simulation method which of the powertrain mounting bracket was being quickly verified on high accuracy.

Key words: Power assembly mounting; Power condition; Main spring linearity; Auxiliary spring nonlinearity; Simulation analysis

摘要： 对某车型动力总成悬置支架进行了有关结构强度的仿真分析，根据整车动力系统匹配， 将极限、典型和破坏工况的动力学载荷输入，整合筛选出了 18 个代表性的考察工况。结合动 力总成悬置支架是由橡胶衬套硫化成型后形成主、副簧结构的传统橡胶悬置，用有限元仿真 方法引入线性和非线性载荷来精准表达力的传递作用关系；针对结构型材及工况特点，建立 了一套具有系统性、多样性及全面性的评价流程。总结归纳出了一种具有较高精度的，能够 对动力总成悬置支架进行快速验证校核的仿真分析方法流程。

关键词: 动力总成悬置；动力工况；主簧线性；副簧非线性；仿真分析