The Unified Description of the Three-dimensional Fields at Notches and Cracks

摘要

The relationship of notch fields and crack fields is concerned in this paper. Based on theoretical studies and 3D numerical simulations, some common features of the 3D elastic-plastic notch fields and the crack fields are analyzed and the unified description of the fields is discussed. It is surprising to find that the 3D stress constraints at a circular hole, a notch and a crack can be described uniformly. Fracture of notches is discussed and some interesting topics in this direction are listed to unify fatigue mechanics and fracture mechanics.