Optimization design for improving the vibration modes decoupling rate and vibration isolation performance of a powertrain mounting system based on the genetic algorithm

被引：0
|
作者：
Lu C. [1 ,2 ,3 ]
Liu Y. [1 ,2 ]
Liu Z. [1 ,2 ]
Zhou Y. [4 ]
Zhang L. [4 ]
机构：
[1] Hubei Key Laboratory Of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan
[2] Hubei Collaboration Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan
[3] Elite Power Technology co, LTD, Wuhan
[4] Engineering training Tongji University, Shanghai
来源：
| 2018年 / Chinese Vibration Engineering Society卷 / 37期
关键词：
28 general conditions; Energy decoupling; Genetic algorithm; Parameter optimization; Powertrain mounting system;
D O I：
10.13465/j.cnki.jvs.2018.14.035
中图分类号：
学科分类号：
摘要：
Aiming at improving the insufficient vibration modes decoupling rate and disappointing vibration performance of the suspended powertrain mounting system in a SUV, a four points suspension 6-DOF multi-body dynamic model for optimizing the power assembly was established based on the simplification of the rear suspension to two 3-directional elastic springs. The three direction stiffnesses of the suspension were taken as optimal variables, and the natural frequencies and modal decoupling rate were taken as optimization objectives in the optimization model. The optimized linear suspension stiffnesses combined with the parameters of original nonlinear stiffness were applied to judge the limiting action of the suspension. The results show that the distribution of different order modal frequencies of the suspension is reasonable, the decoupling rate between Z and Rx directions is highly improved, and the limiting action of the suspension is satisfactory. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：248 / 253
页数：5
相关论文
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