回转型空气弹簧设计、仿真及实验研究

研究回转型空气弹簧设计计算的方法,采用MTS810试验机以及落锤冲击机对空气弹簧的性能特性进行了实验测试,设计计算及仿真计算结果和实验结果吻合较好.实验结果表明设计计算方法简单、准确,建立的Marc非线性有限元计算模型能够准确地模拟空气弹簧的特点,可用于空气弹簧地工程设计计算.空气弹簧冲击刚度有限元仿真计算及实验测试的方法可用于隔振元件冲击刚度计算与实验测试.

Study on Design, Simulation and Experiment of Convoluted Air Spring

The method of design and calculation of convoluted air spring is studied in this paper.Then it is used to design an air spring to meet the requirement.The load,static stiffness,dynamic stiffness,shock stiffness and normal frequency of the air spring are calculated and tested.The aramid cord filament framework layer of the air bag and the air inside are modeled by the Rebar Element and Cavity Element of the MSC Marc software respectively.Then the nonlinear Finite Element Analysis(FEA) model is build up.The characteristics of the air spring are calculated by FEA and tested by the MTS810 test machine and the drop hammer shock machine.The design and simulation results are accord with the experimental results.The theoretical analysis and experimental results indicate that the design method is simple and precise.The nonlinear FEA model simulates the air spring exactly,so the method can be used to design the air spring.The simulation and experiment method of shock stiffness of air spring applied in this paper can be used to test and calculate the shock stiffness of vibration isolators.