トライボロジー問題への破壊力学の応用 : 第1報, 転がり接触荷重下の三次元曲面き裂の伝ぱ解析

概要

論文の詳細を見る
Growth behavior of a 3-dimensional curved surface crack (arrow-headed crack) under lubricated rolling-sliding contact loading is analyzed by considering the stress intensity factors of mode I, II and III. K_<σmax> and K_<τmax> criteria in mixed mode fatigue fractures are used as the conditions for fatigue crack growth. The analytical results support the hypothesis that an arrow-headed crack in the pitting phenomenon first propagates in the shear mode, and tensile mode growth follows due to the hydraulic pressure effect on crack faces by the oil penetrated into the crack. It is also shown that the pitting shape at the contact surface is influenced by the magnitude of the frictional force and the ratio of the crack size to the Hertzian contact width. It is suggested that the application of fracture mechanics analysis to an arrow-headed crack under contact loading is promising for the prediction of the operating conditions in the experiment.
一般社団法人日本機械学会の論文
1992-12-25