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RESEARCH PAPERS

A Criterion for Plastic Failure of Notched High Strength Steel Structures

[+] Author and Article Information
J. Margetson

Ministry of Defence, Propellants, Explosives and Rocket Motor Establishment, Westcott, Aylesbury, Buckinghamshire, U.K.

J. Eng. Mater. Technol 103(2), 142-147 (Apr 01, 1981) (6 pages) doi:10.1115/1.3224985 History: Received April 09, 1980; Online September 15, 2009

Abstract

A criterion of ductile failure for a high strength steel under a multiaxial state of stress is established. A family of multiaxial stress states at failure is generated from the fracture data of a number of notched tensile specimens with differing notch geometries. An elasto-plastic finite element analysis, for a work hardening material, is used to analyze each test. Several failure criteria are considered including maximum stress, maximum strain, and distortional energy. A Von Mises type criterion, suitably equated to the maximum tensile properties of the material, gives highly accurate predictions in all cases.

Copyright © 1981 by ASME
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