Digital Repository, CP2006

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Crack propagation path in lubricated rolling-sliding contact
B. Zafošnik, M. Ulbin, J. Flašker

Last modified: 2013-03-12

Abstract


The paper presents influence of asymptotic and constant term in Williamsequation for stress distribution around the crack tip on crack propagation path relativeto the pre-existing initial crack in lubricated rolling-sliding contact. Crack propagationpath is predicted with modified maximum tangential stress criterion, which takes intoaccount influence of stress intensity factor KI and KII, T-stress, stress on crack surfacecaused by lubricant pressure inside the crack and critical distance ahead the crack tipwhere fracturing process is initiated. The developed model is applied to a real spurgear pair. Results showed that T-stress have important role on crack propagation inlubricated rolling-sliding contact.

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