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Materials 2015, 8(10), 7094-7105; doi:10.3390/ma8105365

Numerical Study of the Effects of Residual Stress on Fretting Fatigue Using XFEM

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
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Author to whom correspondence should be addressed.
Academic Editor: Reza H. Oskouei
Received: 10 August 2015 / Revised: 4 October 2015 / Accepted: 9 October 2015 / Published: 19 October 2015
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Abstract

Residual compressive stress can improve fretting fatigue strength. In this paper, the effects of residual stress on fretting fatigue of Al 2024-T351 alloy specimens are studied using a numerical approach. The extended finite element method combined with the cyclic cohesive zone model is adopted to model fretting fatigue crack growth behavior. It is shown that residual stress changes the fretting fatigue crack growth path and enhances fretting fatigue life. Crack initiation angle, depth of knee point, crack initiation life, crack propagation life and total life are greater for specimens with residual stress compared to specimens without residual stress. The effects of residual stress are more remarkable for specimens with a high intensity of residual stress. However, the effects of residual stress reduce at a high bulk load level. View Full-Text
Keywords: residual stress; fretting fatigue; extended finite element method; cyclic cohesive zone model residual stress; fretting fatigue; extended finite element method; cyclic cohesive zone model
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, H.; Liu, J.; Zuo, Z. Numerical Study of the Effects of Residual Stress on Fretting Fatigue Using XFEM. Materials 2015, 8, 7094-7105.

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