Some possible alternative solutions of near-tip fields are studied for plane-strain Mode-I qua-si-static steady crack growth in incompressible(v=1/2)elastic perfectly-plastic media.A group of four-sector so-lutions and a three-sector solution in which the elastic-unloading region vanishes are given.Stress functions,plas-tic flow factors and plastic strains in each region are also given.
展开▼