Using Extended Finite Element Method for Computation of the Stress Intensity Factor, Crack Growth Simulation and Predicting Fatigue Crack Growth in a Slant-Cracked Plate of 6061-T651 Aluminum — Oak Academic Publishing
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Using Extended Finite Element Method for Computation of the Stress Intensity Factor, Crack Growth Simulation and Predicting Fatigue Crack Growth in a Slant-Cracked Plate of 6061-T651 Aluminum
Department of Mechanical Engineering, University of Applied Science and Technology, Yadak Resan Kaveh Center, Kaveh Industrial City, Saveh, Iran
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Department of Mechanical Engineering, Islamic Azad University, Saveh Branch, Saveh, Iran
1 Department of Mechanical Engineering, University of Applied Science and Technology, Yadak Resan Kaveh Center, Kaveh Industrial City, Saveh, Iran
2 Department of Mechanical Engineering, Islamic Azad University, Saveh Branch, Saveh, Iran
The 6061-T651 aluminium alloy is one of the most common aluminium alloys for marine components and general structures. The stress intensity factor (SIF) is an important parameter for estimating the life of the cracked structure . In this paper, the stress intensity factors of a slant-cracked plate, which is made of 6061-T651 aluminum, have been calculated using extended finite element method (XFEM) and finite element method (FEM) in ABAQUS software and the results were compared with theoretical values. Numerical values obtained from these two methods were close to the theoretical values. In simulations of crack growth at different crack angles, the crack propagation angle values were closer to the theoretical values in XFEM method. Also, the accuracy and validity of fatigue crack growth curve w ere much closer to the theoretical graph in XFEM than the FEM. Therefore, in this paper the capabilities of XFEM were realized in analyzing issues such as cracks.
KeywordsStress Intensity FactorsExtended Finite Element MethodFinite Element MethodSlant-Cracked PlateCrack Propagation AngleFatigue Crack Growth
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