โ Scribed by L. Anand; O. Dillon; T.A. Place; B.F. von Turkovich
No coin nor oath required. For personal study only.
At large plastic deformations, localized instabilities in the form of narrow shear hands inevitably develop. Once such bands are formed they tend to persist and the strain inside the bands can become very large. Shear bands axe an important mechanism of large plastic deformation, and they axe also often important precursors and sites of eventual ductile fracture. The shear localization instability phenomena has been widely studied since the early 1970s. The National Science Foundation (NSF) sponsored and organized a workshop on November 14-15, 1989 in Washington, DC to evaluate the current understanding of Localized Plastic Instabilities and Failure Criteria and to define the research needed (a) to enhance our fundamental scientific knowledge of the phenomena, and (b) to develop a capability for predicting material processing defects, worksbility, machining, and penetration of all classes of en~.ueering materials.
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