动力总成悬置系统优化与减振分析

为了解决汽车动力总成悬置系统隔振问题,建立了某型号动力总成悬置系统的仿真模型.针对悬置系统无阻尼和有阻尼的情况,对支反力进行了对比分析;选取四个橡胶悬置的12个主方向刚度为设计变量,以动力总成悬置系统在各阶固有频率主振方向上的能量解耦程度为目标函数,利用Adams/Insight模块对动力总成悬置系统进行优化,结果显示优化后的悬置系统支反力明显降低,减小了动力总成振动的传递,解耦程度有了明显的提高,通过优化悬置系统的减振效果有了很大的改善.

Optimization and vibration reduction analysis for powertrain mounting system

In order to solve the vibration isolation problem in the vehicle powertrain mounting system, the simulation model for a certain type of powertrain mounting system was established. For the mounting system with and without damping, the comparative analysis for the support reaction of mounting system was carried out. Through selecting 12 main direction stiffness of four rubber mounting systems as the design variable and the energy decoupling degree in the main vibration direction of each order natural frequency of powertrain mounting system as the objective function, the optimization of powertrain mounting system was performed with Adams/Insight module. The results show that the support reaction of optimized mounting system obviously reduces, and the transmission of powertrain vibration also decreases. Moreover, the decoupling degree gets obviously enhanced, and the vibration reduction effect of mounting system gets greatly improved.