考虑被动侧动刚度的动力总成悬置传递率优化  

Vibration Transmissibility Optimization of Powertrain Mounts Considering Passive-side Dynamic Stiffness

作　　者：周子琨 夏二立 陈梓铭 方向东 李落星[1,2] ZHOU Zikun;XIA Erli;CHEN Ziming;FANG Xiangdong;LI Luoxing(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China;College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China;Chang’an Oushang Automobile Institute,Chongqing 400023,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南大学机械与运载工程学院,长沙410082 [3]重庆长安欧尚汽车研究院,重庆400023

出　　处：《噪声与振动控制》2020年第1期74-79,共6页Noise and Vibration Control

基　　金：国家重点研发计划资助项目(2016YFB0101700);国家自然科学基金重点资助项目(U1664252)

摘　　要：针对某乘用车右悬置隔振性能不足的问题,通过调整悬置被动侧动刚度来优化悬置传递率。建立悬置传递率有限元分析模型,并结合试验设计技术、近似模型技术、多目标寻优算法和稳健性设计,以满足悬置传递率设计要求为约束条件,以传递率稳健性最高、动刚度目标值设定合理为设计目标,对被动侧动刚度目标值进行寻优。通过对右悬置被动侧结构进行加强,使被动侧动刚度达到计算获得的最优目标值,试验结果表明,优化后的右悬置传递率整体超过20 dB,满足设计要求。In view of the insufficient vibration isolation performance of the right mount of a passenger car,the vibration transmissibility of the mount was improved by adjusting passive-side dynamic stiffness of the mount.The finite element model for transmissibility analysis was established,and combined with experimental design technology,approximate model technology,multi-objective algorithm and robust design to find the optimal target value of the passiveside dynamic stiffness.The constraints were to meet the design requirements of mount transmissibility,and the design objectives were to achieve the highest transmissibility robustness and reasonable dynamic stiffness target value.Through strengthening the right mount’s passive side structure,the passive side dynamic stiffness could reach the optimal target value.The test results show that the optimized right mount’s transmissibility is more than 20 dB,which can meet the design requirements.

关 键 词：振动与波 动力总成 悬置 被动侧动刚度 传递率 隔振 

分 类 号：U461.4[机械工程—车辆工程]