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RESEARCH PAPERS

Stress and Strain Concentrations in Perforated Structures Under Steady Creep Conditions

[+] Author and Article Information
J. S. Porowski, W. J. O’Donnell, M. Badlani

O’Donnell & Assocs., Inc., Pittsburgh, Pa. 15236

T. Tanaka

Nippon Benkan, Tokyo, Japan

J. Pressure Vessel Technol 102(4), 419-429 (Nov 01, 1980) (11 pages) doi:10.1115/1.3263353 History: Received March 24, 1980; Online November 05, 2009

Abstract

Steady creep solutions are obtained for perforated materials under various loading conditions. Norton’s creep power law is used and the plane stress problem is analyzed for both the triangular and square penetration patterns of circular holes. Maximum local stresses at the hole boundaries are obtained for calculating creep rupture damage. Local creep strain concentration factors are also obtained. The interrelations between the elastic, plastic and creep solutions are investigated.

Copyright © 1980 by ASME
Topics: Creep , Stress , Rupture
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