FEM Analysis of Stress Intensity Factors of Crack Tip

Abstract:

Finite element method is used to analysis two-dimensional compact tension specimens which is made of 304 stainless steel and calculate stress intensity factors by J-integral. The effects of loading magnitude and crack length on stress intensity factors are analyzed. Meanwhile the errors between finite element method and empirical formula are considered. The results calculated by the finite element method and the results obtained with the empirical formula have a small difference and the error locates the allowable range. The results show that the stress intensity factors K₁ and loading amplitude have a linear relationship and the relationship between stress intensity factors K₁ and crack length is non-linear. The rate of crack extension would accelerate when the crack length increase.

• Periodical: Applied Mechanics and Materials (Volume 685)
• Pages: 224-227
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.685.224
• Online since: October 2014
• Authors: Jian Hui Liu*, Sheng Nan Wang, Ya Bing Lu, Zong Zheng Huang
• Keywords: 304 Stainless Steel, Compact Tension, Finite Element Method (FEM), Ĵ-Integral, Stress Intensity Factors

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