Journal
FRONTIERS IN MATERIALS
Volume 2, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2015.00022
Keywords
slip lines; plasticity; failure; stress concentration; rectilinear growth
Categories
Funding
- ERC Advanced Grant Instabilities and non -local multi scale modeling of materials FP7-PEOPLE-IDEAS-ERC
- FP7PEOPLE-CIG [PCIG13-GA-2013-618375-MeMic]
Ask authors/readers for more resources
A model of a shear band as a zero-thickness non-linear interface is proposed and tested using finite element simulations. An imperfection approach is used in this model where a shear band that is assumed to lie in a ductile matrix material (obeying von Mises plasticity with linear hardening), is present from the beginning of loading and is considered to be a zone in which yielding occurs before the rest of the matrix. This approach is contrasted with a perturbative approach, developed for a J(2)-deformation theory material, in which the shear band is modeled to emerge at a certain stage of a uniform deformation. Both approaches concur in showing that the shear bands (differently from cracks) propagate rectilinearly under shear loading and that a strong stress concentration should be expected to be present at the tip of the shear band, two key features in the understanding of failure mechanisms of ductile materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available