Stress Field near the Contact Edge in Fretting Fatigue Tests(Tribology)

概要

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The stress field near a contact edge in fretting fatigue tests depends on the deformation type at the contact edge. During one cycle of loading in a fretting fatigue test, nine types and six independent types of the stress field are possible to exist. In this study, the detailed forms of the singular stress variation range near the contact edge for these basic types have been theoretically deduced. The theoretical results were compared with numerical results obtained by the boundary element analysis. It was found that the singular order of the stress field obtained by the theoretical solution agrees well with the numerical results. It should be noted that the stress variation range presents different singular behavior for different deformation types. Therefore, the fatigue strength evaluation should be carried out in the corresponding way to the stress variation range type. It was found that a fretting fatigue crack initiated in the maximum shear stress range direction, and then kinked into the maximum tangential stress range direction following the initiation stage of the crack.
一般社団法人日本機械学会の論文
2001-10-20