Fractal Model for Tangential Contact Damping of Plane Joint Interfaces with Simulation
Fractal Model for Tangential Contact Damping of Plane Joint Interfaces with Simulation
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发表时间：
2011
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通讯作者：
Liu Zhiheng
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作者：
Liu Zhiheng
基于接触分形理论和结合面接触阻尼耗能机理以及球-面阻尼耗能理论，提出了一种结合面切向接触阻尼的分形模型，数值模拟揭示了切向接触阻尼耗散能与结合面法向载荷之间的非线性关系，得出了切向接触阻尼耗散能与结合面法向载荷之间的非线性关系当分形维数D≤ 1.2时，切向接触阻尼耗散能随分形维数D的增大而增大，当分形维数D为1.2时，切向接触阻尼耗散能随分形维数D的增大而减小。
Based on the contact fractal theory and mechanism of contact damping dissipating energy of joint interfaces as well as damping dissipating energy theory between a sphere and a plane,a fractal model for tangential contact damping of joint interfaces is proposed.Numerical simulation reveals the nonlinear relationship between tangential contact damping dissipating energy and the normal load on joint interfaces.It is concluded that the tangential contact damping dissipating energy of joint interfaces decreases with the normal load on joint interfaces.The tangential contact damping dissipating energy of joint interfaces increases with the fractal dimension D when D≤1.2,but when D1.2 it decreases with D.The effectiveness of the model is verified by the experiment.