Behaviour of Bi-material Interface Cracks in the Presenceof Material Nonlinearity of Adherends
Keywords: Interface cracks, strain energy, finite element modelling, displacement profile, adherents, bi-materials, fracture behaviour
AbstractThe well known features of crack face interpenetration/contact at the tip of an interfacecrack is re-examined using finite element analysis and assuming material nonlinear properties forthe adherends. It was assumed in literature that the crack tips are fully open at all load levelsin the presence of material nonlinearity of the adherends. Analysis for the case of remote tensionshows that even in the presence of material nonlinearity, crack tip closes at small load levelsand opens above a certain load level. Mixed-mode fracture parameters are evaluated for thesituation when the crack tips are fully open. Due to the presence of nonlinearity, the mixed-modefracture parameters are measured with the symmetric and anti-symmetric components of J-integral.The present analysis explains the sequence of events at the interface crack tip with progressivelyincreasing remote tension load for the case of adherends with material nonlinear behaviour.
How to Cite
Dattaguru, B., & Muthukuma, R. (2008). Behaviour of Bi-material Interface Cracks in the Presenceof Material Nonlinearity of Adherends. Defence Science Journal, 58(2), 295-303. https://doi.org/10.14429/dsj.58.1649
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