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An Analytical Life Prediction Model for the Crack Propagation Occurring in Contact Fatigue Failure

An Analytical Life Prediction Model for the Crack Propagation Occurring in Contact Fatigue Failure This analysis develops a three-dimensional analytical model for the crack propagation phase of the surface pitting failure process. An initiated pre-pitting crack is simulated as a semi-circular inclined planar surface crack in a half-space. The cyclic contact fatigue loading is approximated by a repetitious Hertzian line loading moving quasi-statically across the half-space surface with both normal and shear components. Three-dimensional fracture mechanics is utilized to determine the three modes of stress intensity factors around the crack front. A mixed mode fatigue crack growth law is employed to estimate both crack growth geometry and crack propagation life. Numerical results are presented for a 45 degree inclined crack and for the 20 to 30 degree shallow crack angle which is experimentally observed. Life estimates from the present calculations are in line with previous experimental measurements. Presented at the 45th Annual Meeting in Denver, Colorado May 7–10, 1990 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tribology Transactions Taylor & Francis

An Analytical Life Prediction Model for the Crack Propagation Occurring in Contact Fatigue Failure

Tribology Transactions , Volume 35 (3): 11 – Jan 1, 1992

An Analytical Life Prediction Model for the Crack Propagation Occurring in Contact Fatigue Failure

Tribology Transactions , Volume 35 (3): 11 – Jan 1, 1992

Abstract

This analysis develops a three-dimensional analytical model for the crack propagation phase of the surface pitting failure process. An initiated pre-pitting crack is simulated as a semi-circular inclined planar surface crack in a half-space. The cyclic contact fatigue loading is approximated by a repetitious Hertzian line loading moving quasi-statically across the half-space surface with both normal and shear components. Three-dimensional fracture mechanics is utilized to determine the three modes of stress intensity factors around the crack front. A mixed mode fatigue crack growth law is employed to estimate both crack growth geometry and crack propagation life. Numerical results are presented for a 45 degree inclined crack and for the 20 to 30 degree shallow crack angle which is experimentally observed. Life estimates from the present calculations are in line with previous experimental measurements. Presented at the 45th Annual Meeting in Denver, Colorado May 7–10, 1990

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References (34)

Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1547-397X
eISSN
1040-2004
DOI
10.1080/10402009208982143
Publisher site
See Article on Publisher Site

Abstract

This analysis develops a three-dimensional analytical model for the crack propagation phase of the surface pitting failure process. An initiated pre-pitting crack is simulated as a semi-circular inclined planar surface crack in a half-space. The cyclic contact fatigue loading is approximated by a repetitious Hertzian line loading moving quasi-statically across the half-space surface with both normal and shear components. Three-dimensional fracture mechanics is utilized to determine the three modes of stress intensity factors around the crack front. A mixed mode fatigue crack growth law is employed to estimate both crack growth geometry and crack propagation life. Numerical results are presented for a 45 degree inclined crack and for the 20 to 30 degree shallow crack angle which is experimentally observed. Life estimates from the present calculations are in line with previous experimental measurements. Presented at the 45th Annual Meeting in Denver, Colorado May 7–10, 1990

Journal

Tribology TransactionsTaylor & Francis

Published: Jan 1, 1992

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