Incompatible numerical simulation of the axisymmetric cracked body made of ideally elastic-plastic material

It is well known that isoparametric axisymmetric elements always encounter various numerical difficulties in computational plasticity. An incompatible axisymmetric element which can avoid the above-mentioned difficulties is presented and then used to solve axisymmetric ductile fracture problems. As an example a stretched cylinder with a circumferential crack is investigated, and elastic, elastic-plastic solutions and plastic limit loads of the cracked cylinders are given and examined. In addition, the path-independence of the J integral is inspected, and the limits for use of the axisymmetric J integral are suggested. © 1993.link_to_subscribed_fulltex