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

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.

• Periodical: Key Engineering Materials (Volumes 392-394)
• Pages: 980-984
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.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 (FCG), Finite Element Analysis (FEA), Plastic Zone

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