卧式振动离心机主振弹簧的特性试验

在橡胶弹簧本构模型的基础上，采用试验研究与有限元分析的方法，对橡胶弹簧的性能进行研究。通过试验，得出橡胶弹簧剪切刚度和动刚度的载荷-位移变化曲线。在不同的本构模型下拟合试验结果曲线，将拟合出的曲线与原试验曲线的对比分析，由曲线间的误差确定最适合的本构模型是五参数的Mooney-Rivlin本构模型。在选择的本构模型下，应用有限元分析软件对橡胶弹簧进行应力应变的分析验证有限元分析的准确性。通过研究发现橡胶弹簧线性和非线性的区分点，非线性刚度变化特性以及试验得出的橡胶弹簧本构模型，为未来的分析计算提供了有利的理论基础和试验验证。

The rubber spring characteristics test of the main vibration spring in horizontal vibrating centrifuge

Based on rubber spring theory and constitutive model，performances of rubber spring were investigated by some methods like experiment and finite element analysis.Get the load displacement curve of compression stiffness and damping stiffness of rubber spring through the test.Fit test results curves in different constitutive models，by the curve error which get through comparative analysis of the fitting curve and the original test curve to determine the most suitable constitutive model of rubber spring is 5 parameters Mooney Rivlin constitutive model.Based on the appropriate constitutive model，the accuracy of rubber spring was verified on stress strain response by finite element analysis to validate the accuracy of the finite element analysis.Provided favorable theoretical basis and experimental verification for the future analysis and calculation through the study which found distinguish point of the rubber spring linear and nonlinear，non linear changed characteristics in stiffness and the most suitable rubber spring constitutive model which obtained by experiments.