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,该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。
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 semiactive 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.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第24期250-255,共6页
Journal of Vibration and Shock
基金
汽车噪声振动和安全技术国家重点实验室开放基金资助项目(NVHSKL-201405)
关键词
半主动悬置
多目标
结构优化
灵敏度分析
NSGA-Ⅱ算法
semi-active mount
multi-objective parametric optimization
sensitivity analysis
NSGA-II algorithm
