考虑温度因素的磁流变减振器的优化设计与实验

发布时间：2018-04-14 01:28

  本文选题：磁流变减振器 + 温度　； 参考：《振动与冲击》2016年08期

【摘要】：磁流变(Magneto-Rheological,MR)减振器在运行过程中,会出现阻尼力随温度升高而下降的现象,为了在不同温度下都能输出足够的阻尼力,在结构设计时考虑温度因素至关重要。为此,引入了评价系数,对较高温度下MR减振器是否有能力输出足够的阻尼力进行衡量,并与MR减振器的最大阻尼力和动态范围作为优化目标。利用有限元方法获得了工作区域的磁感应强度,并采用响应面法建立二阶预测模型描述了磁感应强度与结构参数之间的非线性关系;结合非支配遗传算法(Non-dominated Sorting Genetic AlgorithmⅡ,NSGAⅡ)对MR减振器的进行了多目标优化设计,根据优化结果设计制造了磁流变减振器,并进行了试验测试,验证了设计方案的有效性。
[Abstract]:In order to output enough damping force at different temperature, it is very important to consider the temperature factor in the design of the structure in order to reduce the damping force with the increase of temperature during the operation of the magnetorheological Mr absorber.Therefore, an evaluation coefficient is introduced to measure whether the Mr absorber is capable of outputting enough damping force at higher temperature, and the optimal target is the maximum damping force and the dynamic range of the Mr absorber.The finite element method is used to obtain the magnetic induction intensity in the working region, and the second-order prediction model is established by using the response surface method to describe the nonlinear relationship between the magnetic flux intensity and the structural parameters.Combined with non-dominated Sorting Genetic Algorithm 鈪，

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