UNIFIED SOLUTIONS OF CACK TIP PLASTIC ZONG UNDER SMALL SCALE YIELDING

摘要

This paper deals with the unified solutions for the shapes and sizes of mode Ⅰ,Ⅱ,Ⅲ crack tip plastic zone under small scale yielding (S.S.Y.)condition by the Yu M.H. unified yield criterion. The precious former solutions for this problem by the Tresca criterion and the Von Mises criterion are only special cases or linear approximation. The solutions offered in this paper can be widely applied to different kinds of materials. From the analysis solutions and diagrams, some new conclusions can be obtained.