摘要
本文提出一种面向整车振动抑制的磁流变阻尼器协同优化方法。设计一种具有锥形倾斜角度阻尼通道的磁流变阻尼器,推导了其阻尼力数学模型,采用有限元法对磁路结构参数进行分析。搭建了整车七自由度模型,通过ISIGHT软件搭建协同优化仿真平台,以悬架动挠度、轮胎动载荷、车身垂向加速度均方根值为优化目标,利用遗传算法对磁流变阻尼器结构进行了优化。结果表明:悬架动挠度、轮胎动载荷和车身垂向加速度都得到了相应的改善,优化后的阻尼器能更好的提高了车辆平顺性和操稳性。
At present, the structure of MR damper is mostly optimized based on the body performance, but the influence of structural parameters of damper on vehicle ride comfort and handling stability is not considered. Therefore, a collaborative optimization method of MR damper for vehicle vibration suppression is proposed. A kind of magneto-rheological damper with conical inclined angle damping channel is designed, and the mathematical model of its damping force is derived. The structural parameters of magnetic circuit are analyzed by finite element method. The seven degree of freedom model of the whole vehicle is built, and the collaborative optimization simulation platform is built by ISIGHT software. The optimization objectives are suspension dynamic deflection, tire dynamic load and root mean square value of body vertical acceleration. The structure of MR damper is optimized by genetic algorithm. The results show that: the suspension dynamic deflection, tire dynamic load and body vertical acceleration have been improved, and the optimized damper can better improve the vehicle ride comfort and handling stability.
作者
韦鑫鑫
朱孙科
邓召学
WEI Xinxin;ZHU Sunke;DENG Zhaoxue(School of Mechanotronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《机械科学与技术》
CSCD
北大核心
2022年第3期473-480,共8页
Mechanical Science and Technology for Aerospace Engineering
基金
重庆市教委科学技术研究项目(KJQN202100728)。
关键词
整车动力学模型
磁流变阻尼器
优化
平顺性
操稳性
vehicle dynamic model
MR damper
optimization
ride comfort
handling stability
