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J-integral for subsurface crack in circular plate with inner hole under rolling and sliding contact
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 Title & Authors
J-integral for subsurface crack in circular plate with inner hole under rolling and sliding contact
Lee, Kang-Yong; Kim, June-Yeop;
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 Abstract
J-integral for a subsurface horizontal crack in a circular plate with an inner hole under rolling line contact is evaluated according to loading positions with various load conditions, crack length and crack location. Two-dimensional crack is modeled, and the relation between Tresca stress for uncracked model and J-integral is discussed. The loading location which gives the maximum J-integral depends on load condition and crack location, and the presence of friction force increases Tresca stress and J-integral near the surface. Regardless of friction force, crack location that gives maximum J-integral is the same as that of maximum Tresca stress in an uncracked model, and the value of J-integral is propotional to crack length. It is also showed that the variation of an inner radius of a disk does not effect J-integral value.
 Keywords
J-integral;Stress;Rolling Contact;Crack;
 Language
Korean
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