Abstract
Fretting usually occurs between contact surfaces, and the amplitude of mutual motion of contact surfaces is at the micron level. In this paper, the sphere-on-plate contact model of the contact surface between cortical bone and Ti-6Al-4V was established. Based on Archard wear equation, the fretting wear behavior was simulated by UMESHMOTION subroutine in ABAQUS software. The effects of fretting displacement amplitude on the surface wear process of Ti-6Al-4V was studied. It was found that the fretting slip state changed from partial slip state to gross slip state with the increase of displacement Amplitude, and the wear depth increased significantly at the same time. This study provided a theoretical basis for the study of fretting wear between titanium alloy medical devices and cortical bone.
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