动力总成悬置系统刚体模态优化设计方法的研究  

A Research on Optimization Design Method for Powertrain Mounting System Rigid Mode

作　　者：陈大明[1,2] 上官文斌[1,2] 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室 [2]华南理工大学

出　　处：《汽车技术》2011年第2期34-38,共5页Automobile Technology

基　　金：汽车动态模拟国家重点实验室开放基金资助(2010-06)项目

摘　　要：以合理分配悬置系统的各阶固有频率和提高各阶解耦率为原则构造了悬置系统优化的目标,以悬置静刚度和安装位置作为设计变量、悬置3向刚度比例为约束条件,对悬置系统的优化方法进行了研究,并以某轿车动力总成悬置系统作为优化实例进行了计算。结果表明,优化后悬置系统各阶固有频率分配更加合理,解耦率得到提高。同时利用不同初始值进行优化,验证了该优化算法的稳定性。The basic design object of mounting system optimization is to assign the natural frequencies appropriately and improve decoupling ratio of the mounting system.The static stiffness and locations of the mounts are selected as design variables,mounting 3-way stiffness proportion as constraint,and the optimization method of mounting system is studied in the paper,which takes the powertrain mounting system of a car as optimization example to calculate.The results show that after optimization,the natural frequency distribution of the mounting system is more rational,decoupling ratio is improved.Meanwhile different initial values are utilized for optimization to verify stability of this optimization algorithm.

关 键 词：动力总成悬置系统 刚体模态 优化设计 

分 类 号：U464[机械工程—车辆工程]