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RESEARCH PAPERS

Elasto-Plastic Analysis of Perforated Plates Containing Triangular Penetration Patterns of 10 Percent Ligament Efficiency

[+] Author and Article Information
D. P. Jones, J. L. Gordon

Westinghouse Electric Corporation, Bettis Atomic Power Laboratory, West Mifflin, Pa. 15122

J. Pressure Vessel Technol 101(3), 210-215 (Aug 01, 1979) (6 pages) doi:10.1115/1.3454625 History: Received March 09, 1979; Online October 25, 2010

Abstract

The finite element method is utilized to obtain the elasto-plastic stress and strain fields in a perforated plate made of a work-hardening material. The perforated plate contains penetrations arranged in a triangular pattern with a ligament efficiency of 10 percent and is considered to be in a state of plane stress. Stress distributions as well as strain concentration factors are presented for the two orthogonal uniaxial and the pure shear load cases. Effective elasto-plastic equivalent solid plate properties are presented in terms of Hill’s anisotropic deformation plasticity theory. The localized stress and plastic strain distributions are discussed in terms of the work-hardening characteristics of the material. Conclusions are drawn relevant to the plastic design and analysis of perforated plates.

Copyright © 1979 by ASME
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