期刊论文

ANALYSIS AND OPTIMIZATION OF DOOR'S JITTER PROBLEM OF A CERTAIN SUV ON TEST FIELD

中文

机械强度

1001-9669

2020

42

04

863-868

10.16579/j.issn.1001.9669.2020.04.016

湖南省自然科学基金项目（2018JJ2681）资助~~；

本校为第一机构

为研究某款SUV以(12 ~ 15) km/h速度行驶搓衣板路面时左后车门抖动问题,通过工作载荷试验与传递函数仿真相结合方法建立传递路径分析(TPA)模型。基于复刚度法求解底盘与车身间的连接点动载荷,同时CAE方法获取内饰车身(TB)有限元模型中连接点到左后车门目标点的传递函数,最后计算各传递路径对目标点的贡献量,将各传递路径的合成值与试验值进行对比,验证该TPA模型的可靠性。根据各路径贡献量大小找出后横向稳定杆左侧是左后车门抖动的主要传递路径,针对该传递路径的连接处动刚度进行结构优化来降低连接点振动传递率,结果表明抖动加速度峰值从8 017 mm/s~2降到4 236 mm/s~2。

In order to study the jitter problem of the left rear door of a certain SUV on the washboard road with speed of (12 ~ 15) km/h,a transfer path analysis (TPA) model is established by combining the working load test with the transfer function simulation. Based on the complex stiffness method,the dynamic load of the connecting point between the chassis and the car body is obtained. At the same time,the transfer function of the left rear door of the Trimmed Body (TB) model is obtained by the CAE method. The contribution of each transfer path to the target point is calculated. The reliability of th...