正负刚度并联的磁流变隔振器性能分析及优化  

Analysis and Optimization of MR Damper Based on Parallel of Positive and Negative Stiffness

作　　者：刘延斌[1,2] 王亚威 韩建海[1,2] Liu Yanbin1,2, Wang Yawei1, Han Jianhai1,2(1. School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China; 2. Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing, Henan Province, Henan University of Science and Technology, Luoyang 471003, China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]河南科技大学机械装备先进制造河南省协同创新中心,河南洛阳471003

出　　处：《系统仿真学报》2018年第10期3965-3974,3984,共11页Journal of System Simulation

基　　金：河南省科技攻关项目(162102210050)

摘　　要：针对精密机床在工作中所受到的外界宽频扰动问题,提出一种正负刚度并联的挤压式磁流变隔振器。基于流体连续性方程和动量方程建立了隔振器的集总参数模型。采用流固耦合数值模拟的方法对隔振器内部液体的流场分布特性进行深入探讨,揭示了隔振器的流场工作机理。依据所建立的集总参数模型,对隔振器的动刚度和位移传递率进行仿真研究,阐明了隔振器的高、低频刚度解耦特性。运用多目标遗传算法对隔振器的结构进行优化设计,并对Pareto解集的综合优选进行分析。该成果可为半主动式精密机床隔振器的设计和应用提供借鉴。For purpose of reducing broadband vibration of precision machine tool from environment, a MR damper with squeeze mode was designed based on parallel of positive and negative stiffness. First, according to fluid continuity equation and momentum equation, the LPM （Lumped Parameter Model） was set up. Then, using two-way fluid-solid coupled nonlinear FEA （Finite Element Analysis）, the flow field distribution was discussed for revealing flow characteristics of damper Based on the LPM,, the dynamic stiffness and displacement transfer rate, as well as the high-low frequency decoupling theory, were studied. Finally, multi-objective genetic algorithm was used to carry out the optimization of damper structure, and the selection strategy of Pareto optimal set was analyzed. This research offers a theoretical guidance for design and application of semi-active damper in the field of precision vibration isolation.

关 键 词：精密隔振 正负刚度并联 流固耦合数值模拟 多目标遗传算法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]