โ Scribed by K.M. Lal; S.B.L. Garg
No coin nor oath required. For personal study only.
This paper reviews and compares the various approaches for finding monotonic and cyclic plastic zone sizes for elastic-perfectly plastic and strain hardening materials. All through the analysis Ramberg-Osgood relationship has been used representing the monotonic and cyclic stress-strain curves. The results for elastic-perfectly plastic materials are compared with those available using finite-element technique. The ratio of monotonic plastic zone sizes strain hardening and elastic perfectly plastic materials are found to be related to the Ramberg-Osgood index n.
The values of cyclic plastic zone size are found to depend upon factors like crack opening stress, material properties and specimen geometry. The cyclic plastic zone size obtained in this paper compare well with those given by Antolovich.
๐ SIMILAR VOLUMES
A method for the crack tip analysis of a tensile loaded crack (mode I) due to yielding of the material is developed. The stress/strain distribution within the plastic zone, as well as size of the plastic zone are presented. The development is based on the energy interpretation of the strain hardenin