The Effect of the Size and Position of the Crack on the Normalized Stress Intensity Factor

Algerian Journal of Renewable Energy and Sustainable Development(2020)

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摘要
In this work, finite element method was used to determine the normalized stress intensity factors for different configurations. For this, a 2-D numerical analysis with elastic behavior was undertaken in pure I mode. This simulation was carried out using a numerical calculation code. On the basis of the numerical results obtained from the different models treated, there is a good correlation between the nodal displacement extrapolation method (DEM) and the energy method based on the Rice integral (J) to evaluate the normalized stress intensity factors and this for different crack lengths. For each configuration, the increase in the crack size causes an amplification of normalized intensity stresses fators.
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关键词
Stress Intensity Factors,Fracture Toughness Testing,Multiaxial Fatigue Criterion,Extended Finite Element Method
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