SYMPOSIA PAPER Published: 01 January 1971
STP38033S

The Role of Cyclic Stress-Strain Behavior on Fatigue Damage Under Varying Load

Source

The stress-strain response for a complex varying load was analysed on the basis of a cyclic stress-strain curve obtained by incremental step stress tests. A new cumulative fatigue damage law was proposed, considering the fact that the cyclic stress-strain curve for complex varying load differs from that for constant amplitude cyclic load. Assuming that local stress-strain behavior at a stress concentration or a crack tip is similar to that of the bulk material, the law was extended to the case of notched specimen, and the extension was verified by experiment.

Author Information

Koibuchi, K
Mechanical Engineering Research Laboratory, Hitachi Ltd., Tokyo, Japan
Kotani, S
Mechanical Engineering Research Laboratory, Hitachi Ltd., Tokyo, Japan
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Details
Developed by Committee: E08
Pages: 229–245
DOI: 10.1520/STP38033S
ISBN-EB: 978-0-8031-5533-6
ISBN-13: 978-0-8031-0078-7