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Finite Element Modelling of Bi-Material Interface for Crack Growth Evaluation:Technical Note


Affiliations
1 Dept. of Mech. Engg. Vel Tech Multitech, Avadi, Chennai, India
2 Dept. of Physics, Vel Tech Multitech, Avadi, Chennai, India
 

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Finite element (FE) method is commonly used to study cracks in structures. In this paper, J-integral method is applied over FE model of a cracked body to determine stress intensity factor (SIF) in the domain of linear elastic fracture mechanics (LEFM). This paper formulates the J-integral methodology for 2D FE model using a coarse mesh with less degrees of freedom. Two cases , a finite plate with edge cracks and a normal crack growth in fiber metal laminated plate, are demonstrated. Numerical implementation and mesh refinement issues to maintain path independent J-integral values are explored.

Keywords

Fiber Metal Laminate, Finite Element Analysis, Crack Growth, Stress Intensity Factor, J-Integral, Fracture Mechanics.
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Abstract Views: 218

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  • Finite Element Modelling of Bi-Material Interface for Crack Growth Evaluation:Technical Note

Abstract Views: 218  |  PDF Views: 102

Authors

M. Logesh
Dept. of Mech. Engg. Vel Tech Multitech, Avadi, Chennai, India
S. Palani
Dept. of Mech. Engg. Vel Tech Multitech, Avadi, Chennai, India
S. Shanmugan
Dept. of Physics, Vel Tech Multitech, Avadi, Chennai, India
M. Selvam
Dept. of Mech. Engg. Vel Tech Multitech, Avadi, Chennai, India
K. A. Harish
Dept. of Mech. Engg. Vel Tech Multitech, Avadi, Chennai, India

Abstract


Finite element (FE) method is commonly used to study cracks in structures. In this paper, J-integral method is applied over FE model of a cracked body to determine stress intensity factor (SIF) in the domain of linear elastic fracture mechanics (LEFM). This paper formulates the J-integral methodology for 2D FE model using a coarse mesh with less degrees of freedom. Two cases , a finite plate with edge cracks and a normal crack growth in fiber metal laminated plate, are demonstrated. Numerical implementation and mesh refinement issues to maintain path independent J-integral values are explored.

Keywords


Fiber Metal Laminate, Finite Element Analysis, Crack Growth, Stress Intensity Factor, J-Integral, Fracture Mechanics.



DOI: https://doi.org/10.4273/ijvss.9.5.01