考虑温度因素的磁流变减振器的优化设计与实验

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Abstract It is revealed that with the increment of working temperature of a magneto-rheological (MR) fluid damper, the performance of the MR damper will be degraded. In order to develop enough damper force under different temperature, it is important to consider the effects of temperature while designing an MR damper. In this study, a temperature evaluation factor is introduced to evaluate whether the MR shock absorber has the ability to provide required damping force under the high temperature. The evaluation factor, the maximization of the damping force and the dynamic range are the objectives in the multiple optimal procedure of the MR damper. To improve the optimization efficiency, a second-order prediction model is established by using the response surface method to describe the nonlinear relationship between magnetic induction intensity and structural variables. The magnetic induction intensity is obtained through the finite element method. The Non-dominated Sorting Genetic Algorithm II (NSGA-II) is applied to solve the multi-objective optimization problem. The optimal design of the manufactured MR damper is experimentally verified. The results show that the design of the MR damper is effective.

Key words： Magneto-rheological fluid damper Temperature Magnetic analysis Optimal design

Received: 03 December 2014 Published: 15 April 2016

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2016/V35/I8/54

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