载货汽车驾驶室疲劳仿真方法研究

摘要

由于载货汽车使用工况比较复杂，针对其驾驶室的静态分析方法已不能满足疲劳耐久性能要求，因此将基于真实路面谱的疲劳仿真方法引入驾驶室设计分析过程中。结合某载货汽车驾驶室局部疲劳开裂案例，对路谱采集、信号处理、橡胶衬套特性分析、多体仿真、虚拟载荷迭代和疲劳寿命分析等各关键技术点进行了介绍。通过疲劳仿真与结构优化改进，使该载货汽车驾驶室局部开裂问题得到解决。%As a result of complex service conditions of duty trucks, cab static analysis can not satisfy fatigue and durability requirement, therefore the durability simulation Approach based on real road spectrum is introduced to cab design analysis. Based on the local cracks of a truck cab, some key technical points including road spectrum data acquisition, signal processing, feature analysis of rubber bushing, multi-body simulation, virtual load iteration and fatigue life analysis, etc., are introduced. By means of fatigue simulation and structural optimization, local cracks in the truck's cab have been avoided.