Abstract：Aimed at the typical rough-body-and-rigid-plane contact model, both fully elastic and elastic-plastic material were used to analyze if the general equivalent method for normal contact stiffness is accurate. Significant error was found while dealing with elastic-plastic contact and the essential reason was revealed. By introducing an interfacial contact layer, a new interfacial equivalent method for is presented and the accuracy of the new method was tested. The accurate dynamic equivalence of the original system is finally achieved. The vibrating characteristic effect of dynamic system was contrastively analyzed by two equivalent methods through an actual example.
2013, Vol. 32 
