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目前,铝合金地铁车体广泛采用大型中空闭口型材,其结构具有一定的复杂性,为简化计算程序,需进行 铝合金车体的有限元建模与静力学分析。本文通过采用两种不同的单元类型(solid45和shell63)建立铝合金地 铁车体典型零件的有限元模型,在相同的边界条件和载荷下,比较两种模型的静力学和动力学计算结果,得出 在满足工程精度的前提下采用板壳单元,可使单元数大大减少,且提高了网格的质量,具有节约计算成本的特 点,这为进行铝合金地铁车体的有限元建模与静、动力学分析及优化提供了参考依据。
Currently, aluminum alloy metro car body widely adopts large-scale hollow closed profile, the structure has a certain complexity. To simplify the calculation procedure, finite element modeling and statics analysis of aluminum alloy body are required. In this paper, finite element models of the typical parts of the aluminum alloy metro car body are established by using two different unit types (solid45 and shell63). The static and dynamic calculation results of the two models are compared under the same boundary conditions and loads In order to meet the engineering accuracy of the premise of the use of plate and shell elements, can greatly reduce the number of units, and improve the quality of the grid, with the cost savings of the characteristics of the aluminum alloy metro body for the finite element modeling and static , Kinetic analysis and optimization provide a reference.