Effect of Contact Pad Geometry on Fretting Fatigue Behavior of High Strength Steel

Download or read book Effect of Contact Pad Geometry on Fretting Fatigue Behavior of High Strength Steel written by Y. Ochi and published by . This book was released on 2003 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of contact pad geometry on fretting fatigue behavior of high strength steel was examined by using the clamping double bridge pads system. In order to investigate the effects of bridge pad shapes, the fretting fatigue tests were carried out by using four types of bridge pad with different leg height h*. The fretting fatigue strength decreased with decreasing in the h*. Also, the stick area increased as increasing of the h*. The contact pressure distribution was measured by strain gauge and calculated by using a finite element method in order to investigate the effect of the pads leg height h*. The contact pressure concentrated in the inside on the contact surface where the main crack initiated. Two-stage tests were carried out in order to investigate the fretting fatigue damage. The two-stage test was performed to a certain cycles under fretting condition and then plain tests without fretting as removing the pads were continued.