Numerical simulation analysis to estimate stress fields along the rectangular crack tip in foams

Abstract

There are numerous parameters that are studied in the crack propagation like K, J or CTOD and in the last 30–40 years, there have a large number of studies to predict the crack behavior. Thus it is interesting for the researchers to study the crack propagation simulation. In this paper, there is brief introduction of the topic is done, the computational models that are associated with the study are mentioned in brief, There could be any number of reasons for the crack failure, but normally the reason that are found is excessive loading or due to corrosion, as the excessive loading is there, there the stress intensity factor increases, which plays a significant role in crack propagation. There could be any mode of failure, like Mode 1, mode II or mode III, but here mixed mode of loading is considered till the propagation is linear, the LEFM i.e. linear elastic fracture mechanics and non linear also, literature is available, but here the plasticity region is studied i.e. non linear behavior. The comparison of variables like effective stress, hydrostatic stress and the volumetric change is compared for incompressible and compressible materials.