Based on contact fractal theory and micro-contact size distribution function, a fractal model for tangential contact stiffness of joint interfaces, considering the influence of the domain extension factor for micro-contact size distribution, was proposed. By numerical simulation, the nonlinear relationship between the tangential contact stiffness and the characteristic parameters of joint interfaces was obtained. The result shows that the tangential contact stiffness of joint interfaces increases with the normal total load applied on joint interfaces, and descreases with the tangential load. Moreover, the tangential contact stiffness increases with the fractal characteristic length scale parameter G* descreasing, but complicatedly varies with the fractal dimension D.
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温淑花,张学良,文晓光,王鹏云,武美先.结合面切向接触刚度分形模型建立与仿真[J].农业机械学报,2009,40(12):223-227. of Tangential Contact Stiffness of Joint Interfaces and Its Simulation[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(12):223-227.