SYMPOSIA PAPER Published: 01 January 1993
STP24795S

A Multiaxial Fatigue Criterion Including Mean-Stress Effect

Source

An energy-based criterion for multiaxial fatigue which includes the influence of mean stress in an explicit form is presented. The criterion is applicable to fatigue lives up to initiation of a small size crack and could be classified as a criterion for the initiation of macroscopic cracks. The appropriate fatigue damage variable is defined as a function of the mechanical input of the distortion energy per reversal of loading, the level of tensile mean stress, and the nature of the imposed constraint. A fatigue failure criterion is obtained by plotting the damage variable versus number of reversals to failure to produce a “master” life curve. The effect of mean stress on fatigue life is described in a consistent manner for both high- and low-cycle fatigue. The predictions of the proposed criterion are compared with experimental data, and the agreement is found to be good.

Author Information

Ellyin, F
Institute of Machine Design Fundamentals, Warsaw Technical University, Warsaw, Alberta, Poland
Kujawski, D
Institute of Machine Design Fundamentals, Warsaw Technical University, Warsaw, Alberta, Poland
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Details
Developed by Committee: E08
Pages: 55–66
DOI: 10.1520/STP24795S
ISBN-EB: 978-0-8031-5243-4
ISBN-13: 978-0-8031-1862-1