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Inversion of the strain-life and strain-stress relationships for use in metal fatigue analysisThe paper presents closed-form solutions (collocation method and spline-function method) for the constants of the cyclic fatigue life equation so that they can be easily incorporated into cumulative damage analysis. The collocation method involves conformity with the experimental curve at specific life values. The spline-function method is such that the basic life relation is expressed as a two-part function, one applicable at strains above the transition strain (strain at intersection of elastic and plastic lines), the other below. An illustrative example is treated by both methods. It is shown that while the collocation representation has the advantage of simplicity of form, the spline-function representation can be made more accurate over a wider life range, and is simpler to use.
Document ID
19790049190
Document Type
Reprint (Version printed in journal)
Authors
Manson, S. S. (Case Western Reserve University Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Publication Information
Publication: Fatigue of Engineering Materials and Structures
Volume: 1
Issue: 1, 19
Subject Category
METALLIC MATERIALS
Distribution Limits
Public
Copyright
Other