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RESEARCH PAPERS

Contact Analysis for Collinear Multiple Cracks in Residual Stress Field

[+] Author and Article Information
T. Nishimura

Mitsubishi Heavy Industries, Ltd., Nagoya Aerospace Systems Works, Nagoya, Japan

J. Pressure Vessel Technol 116(2), 169-174 (May 01, 1994) (6 pages) doi:10.1115/1.2929571 History: Received August 20, 1992; Revised October 13, 1993; Online June 17, 2008

Abstract

A method is proposed for analyzing stress intensity factors and crack profiles for collinear multiple cracks perpendicular to welded joints in an infinite plate. Using the basic solution of a single crack and taking unknown density of fictitious tractions, Fredholm integral equations and algebraic equations are formulated based upon traction-free conditions and crack face displacements, respectively. These equations are solved simultaneously, considering the contact effect of crack surfaces. Using the derived density of fictitious tractions, the stress intensity factors and displacements of multiple cracks are determined. Some numerical examples are analyzed.

Copyright © 1994 by The American Society of Mechanical Engineers
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