Strain field and energy dissipation at a crack tip under axisymmetric strain conditions


Plastic flow at the crack tip is considered using the ideal rigid-plastic body theory under axisymmetric strain conditions. The material at the crack tip is treated as a body consisting of an elastic outer region and a rigid-plastic inner region. It is shown that distributions of the energy dissipation and strains at the crack tip are defined by conformable expressions under plane strain conditions at the limiting case.