基于显式弹塑性车辆悬架系统结构优化设计  

Optimization design of vehicle suspension based on explicit elasticity-plasticity

作　　者：姜小丽[1] 

机构地区：[1]冀中职业学院,定州073000

出　　处：《现代制造工程》2017年第9期59-67,共9页Modern Manufacturing Engineering

基　　金：河北省自然科学基金项目(2013MS0921)

摘　　要：悬架系统是整车安全行驶的重要结构件。以某重型运载车辆单纵臂悬架为研究对象,使用应力波传播理论,在ABAQUS软件中搭建悬架系统模型,对悬架在3种典型工况下的显式动力学性能进行分析。分析结果表明:3种不同工况下的应力值都较大;动载荷是对悬架结构造成破坏的最重要因素;悬架中的焊缝连接处及尖角处具有明显的应力集中和塑性变形;悬架结构中相对薄弱的区域主要是集中在转向节和转向纵臂的铰接连接处。根据强度和刚度分析结果对悬架结构进行改进和优化,并采用试车方法进行验证。试验结果表明,显式动力学弹塑性能分析方法对计算动载荷工况下悬架应力应变状况实用有效。Suspension system is an important structure device for vehicle safety driving. Taking a heavy vehicle single trailing arm suspension as the research object,the explicit dynamic elastoplastic of the suspension system is analyzed by using the theory of stress wave propagation under three typical working conditions, by constructing model based on ABAQUS. Analysis result shows that：the stress under three different conditions are larger; dynamic load is the most important damage factor on suspension struc- ture;the weld connecting and sharp corners has obvious stress concentration and plastic deformation; the suspension structure is relatively weak in the areas that the steering knuckle and steering longitudinal arm hinged joints. According to the strength and stiffness analysis results, the suspension structure was optimization designed, and verified by the test. The test result shows that the dynamic explicit elastic-plastic performance analysis method is practical and effective for calculating the stress and strain under the dynamic load condition.

关 键 词：单纵臂悬架 悬架系统 显式动力学 弹塑性 应力 优化 

分 类 号：TH122[机械工程—机械设计及理论] U463.33[机械工程—车辆工程]