Finite element analysis of the effects of additional load phase and amplitude on fretting wear

Abstract

Fretting wear is a major form of fretting damage involving various factors, such as material properties, surface roughness, surface topography, lubrication conditions, environment temperature, type of loading, and loading phase difference. In this study, ABAQUS is used to establish three models to simulate the variation of wear depth with the amplitude of additional load. The influence of the phase difference between additional load and original load is considered. Four phase difference angles are involved, i.e. 0°, 90°, 180°, and 270°. Results indicate that the rule of the variation of wear depth with the additional load amplitude increasing varies under different phase differences. It is observed that for the 0° phase difference, the wear depth firstly decreases then increases with the increase of the additional load. However, the wear depth increases monotonously in the case of the 180° phase difference. The variation of wear depth with additional load amplitude for 90° phase difference is similar to that of the 270° phase difference. The depth of wear is firstly kept at a relatively low level and then increases sharply, with the increase of the additional load. It is found that the distribution of shear stress and relative slip at the contact interface is also affected by the phase difference.

A new fretting fatigue loading method and its finite element simulation

“…It is found that the fretting fatigue cracks perpendicular to the contact center often originate in the sub surface instead of the contact surface [13] . The Mises equivalent stress distribution along depth direction is extracted as shown in figure 6(a).…”

“…The material response fretting map associated with fretting regimes map has been proposed which indicates that both fretting wear and fretting fatigue compete on the mixed regime [6] . Finite element (FE) models have been developed by many authors for fretting computations [7][8][9][10][11][12][13][14] .…”