Finite Element Examination and Validation of Stress Field around Ductile Mode I Crack Tip in Elastic Plastic Fracture

Homayoun Alizadeh; Amit R. Bedare; Sunil Bhat

doi:10.4028/www.scientific.net/AMR.746.342

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Finite Element Examination and Validation of Stress Field around Ductile Mode I Crack Tip in Elastic Plastic Fracture

Abstract:

The paper presents the stress field, obtained with the help of finite element method, around Mode I crack tip in ductile steel under EPFM regime. Process, plastic and non-K compliant elastic zones develop. Void nucleation ahead of the crack tip is observed in the process zone. The stress solution in the plastic zone is validated with theoretical HRR solution. In the elastic zone, as expected, substantial error is observed between K dominated LEFM solution and numerical EPFM values.Nomenclature