【摘要】 考虑限位器中关键零部件材料的非线性特性，基于二参数Mooney-Rivlin模型、二阶Polynomial模型以及广义Maxwell模型建立了限位器关键零件材料的本构模型，使用有限元软件建立了抗冲击限位器的冲击仿真模型并通过跌落试验验证了仿真模型的正确性，在此基础上开展了限位器关键零件结构参数及工况参数对限位器垂向冲击刚度的影响研究。结果表明：限位器的垂向冲击刚度随环形橡胶件厚度、直径的增大而减小，随金属橡胶垫片的相对密度增加而增加，随金属橡胶垫片丝径增加而减小；相同结构参数的限位器，当冲击加速度峰值增加或冲击脉宽增加时，其垂向冲击刚度增大。更多还原

【Abstract】 In view of the nonlinear characteristics of the material of the key parts in the limiter, the constitutive model of the material of the key parts of the limiter is established based on the two-parameter Mooney-Rivlin model, the second-order Polynomial model and the generalized Maxwell model.The finite element software is used to establish the impact simulation model of the impact limiter and the correctness of the simulation model is verified by the drop test.On this basis, the influence of the structural parameters and working conditions of the key parts of the limiter on the vertical impact stiffness of the limiter is studied.The results show that the vertical impact stiffness of the limiter decreases with the increase of the thickness and diameter of the annular rubber part, increases with the increase of the relative density of the metal rubber gasket, and decreases with the increase of the wire diameter of the metal rubber gasket; for the limiters with the same structural parameters, the vertical impact stiffness increases with the increase of the peak acceleration or the pulse width.更多还原