Abstract
Fretting damage is caused by small relative displacement between two bodies. It can result in loosening of fasteners or fatigue cracks. The traditional mode of fretting fatigue loading is to add a fixed normal load on the fretting pad and a corresponding fatigue load on the free end of the specimen. A new fretting fatigue loading method is proposed to simulate the actual working condition of spline coupling. A 3D finite element model is implemented to simulate the contact state in the process of bending fretting fatigue. The influence of cyclic bending load on the stress and strain of contact surface is studied. The new model is proved to be correct and effective.
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