摘要
将挤压油膜阻尼器设计与转子动力学相结合,使用胞映射方法对定心式挤压油膜阻尼器进行多目标优化设计。阻尼器设计参数为阻尼器径向油膜间隙以及定心弹簧刚度。综合考虑了阻尼器的触底现象、转子系统的动力学响应及稳定性,使用多目标优化设计方法以达到抑制转子过临界转速振幅及支撑外传力的目的。针对所得帕累托集合,对所得全局最优解集进行试验验证,结果表明:该最优解集所得设计变量可满足设计需求,可有效地应用到阻尼器的设计过程。
A centralized squeeze film damper is optimized employing cell mapping method, considering the dynamics of rotor system. The designed parameters are the stiffness of centering spring and SFD oil film clearance. Considering the bottoming out of SFD journal, dynamical response and stability of rotor system, multi-objective optimization is carried out to suppress the vibration and transmitted force when traversing the critical speeds. After the Pareto front and Pareto set are obtained, experiments are conducted to validate the numerical results. The results show that the designed parameters picked from Pareto set satisfy the operating requirements, and the proposed method is effective to the design of squeeze film damper.
作者
张微
韩兵兵
李响
孙建桥
丁千
ZHANG Wei;HAN Bingbing;LI Xiang;SUN Jianqiao;DING Qian(School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136;Department of Mechanics,Tianjin University,Tianjin 300072;College of Sciences,Northeastern University,Shenyang 110819;School of Engineering,University of California Merced,Merced 95343,USA)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2019年第19期68-74,共7页
Journal of Mechanical Engineering
基金
国家自然科学基金(51575378,11332008,11772205)
辽宁省教育厅资助项目(L201703,L201737)
中央高校基本科研业务专项资金(N170503012,N170308028)资助项目
关键词
挤压油膜阻尼器
转子系统
多目标优化
胞映射
squeeze film damper
rotor system
multi-objective optimization
cell mapping
