An approach to nonlinear fracture mechanics using adina

A post-processor for the ADINA program has been developed to calculate J-integral and J-integral values. The post-processor can deal with relatively complex fracture mechanical behaviors with plastic strains, thermal strains, inertia forces and body forces taken into account This paper presents the results of two fracture mechanical analyses of the center-cracked plate. These results indicate that the J-integral can be considered path-independent even in the presence of plastic strains and inertia forces, and that it can hold a constant value during the stable crack growth.