客车车身有限元分析

为了研究客车车身在不同工况下的受力和变形,对某半承载式客车车身的结构进行了分析和实体测绘,得到建模的基本数据,通过合理的简化建立了车身三维几何模型。定义了模型单元并对车身几何模型进行了有限元网格划分,定义了边界约束条件,建立了车身有限元模型。在弯曲、扭转、急转、制动4种不同工况下,对半承载式客车车身模型进行了强度和刚度校核。结果表明:该客车车身能够满足强度和刚度设计要求,同时在车身等强度和轻量化设计方面有优化空间。

The Finite Element of Analysis of Bus Skeleton

To investigate the stress and strain of bus body under different conditions, in this paper, a self-load bus body was anglicized and mapped, basis data was gained, and three-dimensional geometrical modeling of body was established under the premise of reasonable sim-plification. The elements of geometrical modeling were defied and meshed in finite element. Under boundary constraint conditions, the finite element modeling was established. The stiffness and strength of body was checked under bending, torsion, emergency turn and brake four dif-ferent conditions. The results show that this bus body has enough stiffness and strength and larger space to obtain the lightweight optimized frame structure.