The criterion of fracture with large plastic deformations
Keywords:
bent profile, criterion of destruction, tensely-deformed state, tension, bend, intensity of tensions, intensity of deformations, function of dissipation of energy, specific work of deformation
Abstract
Based on the analysis of literature data on the process of destruction metal tensile tests adopted the criterion of fracture most closely characterizes this process - specific work of deformation of a single volume. Because the specific potential energy of change of form of element at his plastic deformation does not depends on the schema of the busy state of metal adopted the criterion of destruction can be extended to other schemes of stressed-strained state and, in particular, to use when defining critical process capability profiling field bending of profiles.
