๐”– Bobbio Scriptorium
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Reliability analysis of structural components utilizing the strain-life method

โœ Scribed by S. Kandarpa; B.F. Spencer Jr; D.J. Kirkner

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
808 KB
Volume
53
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

Abstrac~ Traditional strain-life analysis for low-cycle fatigue does not account for the significant random scatter exhibited by the experimental data. In this paper, a stochastic analog of the strain-life approach is presented. The material constants characterizing the strain-life equation are taken to be random variables. The probability of exceeding the random number of cycles to failure for the structural component is then estimated via second order reliability methods. The effect of mean stress on failure probability is included. The problem of a notched specimen subjected to constant amplitude cyclic loading is used to illustrate the approach. Importance factors for the material constants characterizing the problem are analyzed to determine which uncertainties are most significant.

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