摘要
基于极限状态的静态载荷,利用拓扑优化技术对某牵引车空气悬架的下推力杆支架进行了结构优化设计,在保证结构刚度和强度的基础上,达到了结构轻量化的目标;同时运用多体动力学方法:,提取了轴端随机载荷条件下该件连接部位的动态载荷,并分析了该件在该载荷条件下的疲劳损伤情况。结果:表明,优化方案较原始方案在刚度、静强度和疲劳寿命方面均有明显改善。
Based on the ultimate static load, topology optimization technology is utilized to optimize the structure of the lower thrust bar bracket of air suspension on a tractor, on the basis of ensuring the structural stiffness and strength, the target of lightweight design is also reached; Meanwhile, by using the method of multi-body dynamics, the dynamic load at connecting position of the component under a random load put on the ends of axles is extracted, and then, the fatigue damage of the bracket under such load condition is analyzed. The result indicates that comparing with the original structure, the optimized structure shows remarkable improvements of stiffness, static strength and fatigue life.
出处
《汽车实用技术》
2012年第7期22-26,共5页
Automobile Applied Technology
关键词
拓扑优化
轻量化设计
疲劳寿命
topology optimization
lightweight design
fatigue life
