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Shakedown Analysis of Shaft in Bearing-Shaft Assembly
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 Title & Authors
Shakedown Analysis of Shaft in Bearing-Shaft Assembly
Park, Heung-Geun; Park, Jin-Mu; O, Yun-Chan;
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Under repeated rolling, initial plastic deformation introduces residual stresses which render the steady cyclic state purely elastic. This is called the process of shakedown. Many studies have been done about the shakedown in semi-infinite half space using calculated Hertizian pressure. In this paper shakedown processes in a shaft are studied by finite element analyses of a two dimensional(plane strain) model with elastic-linear-kinematic-hardening-plastic material subjected to repeated, frictionless rolling contact. Symmetric and non-symmetric pressure distributions are obtained using a simplified model of the bearing-shaft assembly. The rolling contact is simulated by repeatedly translating both pressure distributions along the surface of the shaft. By the influence of the non-symmetric pressure, larger residual radial tensile stress is generated in the immediate subsurface layer, which may make a crack propagate and, the subsurface undergoes a zigzag plastic deformation during the shakedown process, which may lead to a crack initiation.
Shakedown;Contact;Finite Element Method;Residual Stress;Plastic Deformation;Crack Driving Force;
 Cited by
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