Open AccessCrack tip shape effect on stress-strain fields in plastically compressible materials
Author(s) -
Mohd Alam,
Debashis Khan,
Yash Mittal,
Sanjay Kumar
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/629/1/012035
Subject(s) - materials science , compressibility , viscoplasticity , hardening (computing) , plane stress , composite material , softening , strain hardening exponent , plasticity , mechanics , crack tip opening displacement , constitutive equation , deformation (meteorology) , stress intensity factor , structural engineering , fracture mechanics , finite element method , physics , layer (electronics) , engineering
In the present study, the effects of crack tip shape on near tip deformation and fields are numerically investigated for a mode I crack under plane strain and small scale yielding conditions. The material is characterized by finite strain elastic-viscoplastic constitutive relation with bi-linear hardening and hardening-softening-hardening hardness functions. Both plastically incompressible and compressible solids have been considered for analyses. It has been observed that the combination of crack tip profile and plastic compressibility has significant effect on the near tip deformation and plastic fields.