发泡聚乙烯隔振性能研究

Study of Vibration Isolation Performance of EPE

为研究发泡聚乙烯的隔振性能,测试了质量块和振动台的加速度信号;运用最小二乘原理,消除了实验数据的趋势项;建立了发泡聚乙烯多项式动力学模型,识别出了一个工况下的衬垫的参数;运用Runge-Kutta法和重构恢复力-位移曲线,证明了模型的正确性;最后,运用相同的方法,得出了其它工况下的参数识别结果。研究的结果可直接为防震包装提供理论依据。

Acceleration signals of mass and electrodynamics shaker were measured.Least-squares method was applied and the trend items of the signals generated by shaker were eliminated.The polynomial dynamic model of polyethylene was established.The stiffness and damping of a load condition was identified.Runge-Kutta method was applied to reconstruct force-displacement curve and the correctness of the model was proved.The parameters of other load conditions were obtained with the same method.The computed results can be references for vibration isolation packaging.