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为了减少车轮试验的测试次数,提高设计的效率,对车轮的冲击试验进行有限元模拟显得非常重要。依据轮毂的型号选用合适的轮胎,通过NX软件对轮毂、轮胎和冲击块进行三维建模,根据国家对冲击试验的标准,使用NX NASTRAN软件对模型施加了载荷和约束,对冲击试验的过程进行了有限元模拟,观察分析结果,找出冲击块下落过程中的最低位置即轮毂受到非线性应力最大的位置、轮毂受到应力集中的时间段和轮毂发生裂纹的危险区域,对轮毂的设计具有指导意义。
In order to reduce the number of wheel tests and improve the efficiency of the design, it is very important to carry out the finite element simulation of the wheel impact test. According to the model of the hub, select the appropriate tire, 3D modeling of the hub, tire and impact block by NX software, load and restraint imposed on the model by NX NASTRAN software according to the national standards of impact test, the impact test process Finite element simulation was conducted. The results of the analysis were observed and the lowest position of the impact block was found out. That is, the hub was subjected to the location with the highest nonlinear stress, the time period when the hub was subjected to stress and the danger zone where the hub was cracked. significance.