摘要
由于作动力源的电池箱质量较大,使得电动客车整车受力状况与燃油车相比发生了很大的变化。在建立的有限元模型基础上,分析了车身结构在弯曲工况、扭转工况、紧急制动工况和急转弯工况下的强度,同时分析了弯曲工况和扭转工况的刚度。分析结果显示,在一个后轮悬空时工况下车架后部受力状态最为恶劣,但是强度和刚度仍能满足要求,在其他工况下车身结构强度和刚度水平较高,整车结构还有很大的优化空间。
Due to the rather big mass of cell box that serves as the source of power, there happened quite a big variation on the force bearing condition of the whole electric coach when compared with that of the fuel vehicle. On the basis of the established finite element model, the strength of structure of vehicle body was analyzed under working conditions of bending, twisting, emergency braking and urgent turning, and the stiffness of bending working condition and twisting working condition were analyzed at the same time. The result of analysis demonstrated that under the working condition with one of the rear wheel off the ground, the force bearing status of rear part of coach frame is the worse one, yet the strength and stiffness could still satisfy the requirement. The strength and stiffness of the structure of vehicle body under other working conditions lies on a rather high level, thus there is still a large space of optimization for the structure of the whole vehicle.
出处
《机械设计》
CSCD
北大核心
2006年第5期23-27,共5页
Journal of Machine Design
基金
国家"863"高技术研究资助项目(2003AA501800)
北京市"科技奥运"项目(H030330130110)
关键词
电动客车
有限元分析
车身结构
electric coach
finite element analysis
structure of coach body
