Elasto-Plastic Stress Analysis of the Standard Compact Specimen

[+] Author and Article Information
H. Terada

National Aerospace Laboratory, Jindaiji, Chofu, Tokyo, Japan

J. Pressure Vessel Technol 105(2), 132-137 (May 01, 1983) (6 pages) doi:10.1115/1.3264254 History: Received February 23, 1982; Revised February 11, 1983; Online November 05, 2009


Two-dimensional stress analysis for the standard compact specimen under plane stress and plane strain conditions were carried out by using the boundary collocation method. The Dugdale model concept was employed for elasto-plastic analysis. Plastic zone size and crack opening displacements at the typical locations, such as edge of plate, load line, and crack tip, were calculated for the practical range of applied load, and crack length-to-width ratio in the fracture toughness tests. In the process of elasto-plastic analysis, crack opening displacements and stress intensity factors corresponding to the elastic solution of the compact specimen were obtained. These results were shown to reasonably agree with those derived by Srawley and Gross, and by Newman.

Copyright © 1983 by ASME
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