汽车发动机半主动悬置多目标结构优化设计

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (24) : 250-255.

论文

汽车发动机半主动悬置多目标结构优化设计

郑玲 ,2，刘巧斌1，犹佐龙1，庞剑2，3，徐小敏2，3，陈代军2，3

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Multi-objective optimization design for semi-active mount of vehicle’s engine

ZHENG Ling1,2, LIU Qiaobin1, YOU Zoulong1,PANG Jian2,3, XU Xiaoming2,3，CHEN Daijun 2,3

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摘要

针对一种控制节流孔式双模式半主动悬置，建立其集总参数模型，通过灵敏度分析确定优化变量，以软硬模式所处区间力传递率最小为优化目标，采用改进型非支配排序遗传算法（NSGA-II）对其集总参数进行优化，并将优化后的集总参数转化为悬置结构设计参数。仿真和试验结果均表明，优化后的半主动悬置在目标区间内具有较低的力传递率，本研究对高性能半主动悬置样件的开发和优化设计具有重要的理论指导意义。

Abstract

Here, dynamic performances of a semi-active engine mount with a controllable orifice in dual-mode operations were studied. The lumped parameter model for the engine mount was established to predict its dynamic characteristics. The sensitivities of parameters were analyzed to take key parameters as design variables to be optimized. The minimization of the force transmission rate between two modes (soft and hard) was taken as the optimization objective. Thus, a multi-objective optimization problem was developed. Furthermore, NSGA-II algorithm was employed to find optimal design parameters for the semi-active engine mount. The simulation and test results showed that the semi-active engine mount after optimization has a lower force transmission rate within the target interval; the results provide a reference for the development and optimal design of semi-active engine mounts with high performances.

Key words

semi-active mount / multi-objective parametric optimization / sensitivity analysis / NSGA-II algorithm

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郑玲,2，刘巧斌1，犹佐龙1，庞剑2，3，徐小敏2，3，陈代军2，3. 汽车发动机半主动悬置多目标结构优化设计[J]. 振动与冲击, 2017, 36(24): 250-255

ZHENG Ling1,2, LIU Qiaobin1, YOU Zoulong1,PANG Jian2,3, XU Xiaoming2,3，CHEN Daijun 2,3 . Multi-objective optimization design for semi-active mount of vehicle’s engine[J]. Journal of Vibration and Shock, 2017, 36(24): 250-255

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