Improved Model of Normal Contact Stiffness of Joint Surface Based on Conical Asperity
In order to make the contact characteristic model of the joint surface more accurate,the rough joint surface asperity on the rough contact surface is equivalent to a conical asperity.The improved W-M function is used to simulate the three-dimensional topography of the rough surface,and the contact radius of asperity is modified.Considering the influence of domain expansion factor on the cross-sectional area distri-bution function,the normal contact stiffness model of the joint surface is established and simulated.The in-fluence of surface shape parameters on normal contact stiffness are analyzed.Finally,the model is compared with the real test data and the previous model,and the accuracy of the model applied to the numerical cal-culation of the normal stiffness of the actual joint surface is proved,and the feasibility of the model is fur-ther confirmed.The model is helpful to predict the contact stiffness of the joint surface more accurately,and provides a basis for improving the relevant mechanical structure.
NETL
NSTL
万方数据
维普
