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1.

Finite element-based model for crack propagation in linear elastic materials Pages 131-142 Right click to download the paper Download PDF

Authors: Abdulnaser M. Alshoaibi

doi 10.5267/j.esm.2019.10.002 Crossmark

Keywords: Crack growth, Finite element, Stress intensity factors, Linear elastic fracture mechanics, Adaptive Mesh generation

Abstract:
Modeling of a crack propagating through a finite element mesh under mixed mode conditions is of prime importance in fracture mechanics. This paper presents an application of the finite element method to the analysis of crack growth problems in linear elastic fracture mechanics and the correlation of results with experimental data. In the present study, the crack growth simulation has been numerically simulated by using the finite element source code program using Visual FORTRAN language. This code includes the mesh generator based on the advancing front method as well as all the pre and post process for the crack growth simulation under linear elastic fracture mechanics theory. The maximum circumferential stress criterion has been used for prediction of the crack growth in isotropic materials under mixed-mode loading. Furthermore, the equivalent domain integral method has been used for calculating the stress intensity factors values during crack growth. The crack grows when the stress intensity factor exceeds the fracture toughness of the material in the case of static loading. Verification of the predicted crack path is validated with relevant experimental data and numerical results obtained by other researchers with a good agreement.
Details
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Journal: ESM | Year: 2020 | Volume: 8 | Issue: 2 | Views: 2504 | Reviews: 0

 

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