Influence of crack offset distance on the interaction of multiple cracks on the same side in a rectangular plate

In the present work finite element method has been employed to study the interaction of multiple cracks in a finite rectangular plate of unit thickness with cracks on the same side under uniaxial loading conditions. The variation of the stress intensity factor and stress distribution around the crac...

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Bibliographic Details
Published in:Frattura ed integritá strutturale 2015-04, Vol.9 (32), p.1-12
Main Authors: Bisht, Neeraj, Gope, P C, Panwar, Kuldeep
Format: Article
Language:English
Subjects:
Analysis
Crack interaction
Cracks
Edge cracks
Finite element method
Generalized linear models
Mathematical analysis
Neighbouring
Offsets
Rectangular plates
Shear stress
Stress intensity factor
Stresses
Studies
Von-Mises stress
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Summary:In the present work finite element method has been employed to study the interaction of multiple cracks in a finite rectangular plate of unit thickness with cracks on the same side under uniaxial loading conditions. The variation of the stress intensity factor and stress distribution around the crack tip with crack offset distance has been studied. Due to the presence of a neighbouring crack, two types of interactions viz. intensification and shielding effect have been observed. The interaction between the cracks is seen to be dependent on the crack offset distance. It is seen that the presence of a neighbouring crack results in the appearance of mode II stress intensity factor which was otherwise absent for a single edge crack. It can be said that the proximity of cracks is non-desirable for structural integrity. The von-Mises stress for different crack orientations has been computed. Linear elastic analysis of state of stress around the crack tip has also been done.
ISSN:1971-8993
1971-8993
DOI:10.3221/IGF-ESIS.32.01