Paper Title:

Elastic-Plastic Finite Element Analysis of the Effect of the Compressive Loading on Fatigue Crack Tip Parameters

Periodical Key Engineering Materials (Volumes 392 - 394)
Main Theme Manufacturing Automation Technology
Edited by Guanglin Wang, Huifeng Wang and Jun Liu
Pages 980-984
DOI 10.4028/www.scientific.net/KEM.392-394.980
Citation Y. Sha et al., 2008, Key Engineering Materials, 392-394, 980
Online since October, 2008
Authors Y. Sha, Hui Tang, Jia Zhen Zhang
Keywords Compressive Loading, Crack Opening Displacement (COD), Fatigue Crack Growth, Finite Element Analysis (FEA), Plastic Zone
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Abstract

In this paper, a detailed elastic-plastic finite element analysis of the effect of the compressive loading on crack tip plasticity is studied based on the material’s kinematic hardening model. Five centre-cracked panel specimens with different crack lengths are analyzed. The analysis shows that in a tension-compression loading the maximum spread of the crack tip reverse plastic zone increases with the increase of the compressive stress and the near crack tip opening displacement decreases with the increase of the compressive stress at the same nominal stress intensity factor. The applied compressive stress is the main factor controlling the near crack tip parameters.