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FINITE ELEMENT SIMULATION DEVICE AND METHOD FOR CAR BODY LOCAL STRUCTURE INSTABILITY OF HIGH-SPEED MOTOR TRAIN UNIT

机译:高速火车单元车身局部结构不稳定性的有限元模拟装置及方法

摘要

A finite element simulation device and a method for car body local structure instability of a high-speed motor train unit are provided. A human-machine interaction device is adopted to model firstly according to car body drawings and to build and simulate a dent portion in a local part of the car body. A boundary constraint of the car body is established, a maximum vertical load and a compression load of the car body are linearly composited, a modal frequency of the car body is defined, a static load working condition and a linear buckling analysis working condition are established, and then a car body instability simulation analysis is performed to calculate a critical buckling coefficient, thus the maximum load allowed to be applied is obtained.
机译:提供了一种用于高速机动车辆单元的车身局部结构不稳定性的有限元模拟装置和方法。首先采用人机交互装置,根据车身图纸进行建模,并在车身局部建立并模拟凹痕部分。建立了车身的边界约束,线性合成了车身的最大垂直载荷和压缩载荷,定义了车身的模态频率,建立了静载荷工况和线性屈曲分析工况,然后进行车身失稳仿真分析以计算临界屈曲系数,从而获得允许施加的最大载荷。

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