A General Theory of Fatigue Damage Accumulation

[+] Author and Article Information
Arthur Sorensen

College of Applied Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, Wis.

J. Basic Eng 91(1), 1-14 (Mar 01, 1969) (14 pages) doi:10.1115/1.3571021 History: Received July 12, 1968; Online November 03, 2011


The aim of this presentation is to develop a general linear theory of isotropic cumulative failure. This involves a phenomenological consideration of fatigue damage accumulation under very general conditions. In order to accomplish this, it is necessary to extend the basic notion of cycle-dependent behavior for a harmonic stress variation to more complicated situations. The mean and alternating components of a conventional waveform are given a suitable interpretation to account for irregular stress-time variations. The state of stress also receives proper consideration to allow for independent variation of each tensor element. The entire program is motivated by a desire to achieve complete generality, and the systematic development of the analytical model is predicated upon the experimental observations and theoretical proposals of previous investigators. This provides a firm logical-empirical basis to support the proposals made in this investigation.

Copyright © 1969 by ASME
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