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The Influence of Mean Strain Under Two-Step High-Low Loading on Cumulative Fatigue Damage in St5 Steel

Gołoś K., Dębski D.

Machine Dynamics Research

2013

Vol. 37, No. 4

35-41

In the paper results of a comparison analysis of cumulative fatigue damage in St5 steel under two-step high-low loading including mean strain were presented. The analysis was carried out with the modified energy based damaged parameter including mean strain. The analysis showed that additional mean strain affects the cumulative damage in two-step loading and generally decreases the fatigue life comparing to tests without mean strain. It is shown that during damage cumulation is possible using proposed damage parameter to take into account the effect of mean strain.