A Generalization of Cumulative Damage

[+] Author and Article Information
R. M. Mains

Knolls Atomic Power Laboratory, Schenectady, N. Y.

J. Basic Eng 82(2), 435-440 (Jun 01, 1960) (6 pages) doi:10.1115/1.3662612 History: Received January 26, 1959; Online November 04, 2011


In the application of various damage accumulation hypotheses to shock and vibration problems, a pattern of results was observed. A plot of allowable response (for the largest of a sequence of excitations) versus the number of excitations in the sequence produced straight lines on log-log paper for each value of damping. It seemed likely that a generalization could be found which would relate the allowable response to the largest excitations with a load-distribution factor, a material-and-structure factor, and the material constants from fatigue tests. One form of this generalization is presented, together with some numerical examples of its use, and a discussion of its possible significance.

Copyright © 1960 by ASME
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