Fatigue Life Prediction Under Multiaxial Variable Amplitude Loading Using A Stress-Based Criterion
This article presents fatigue life calculations for metals under different multiaxial variable amplitude loading patterns. Developed from a stress-based multiaxial fatigue criterion, a damage parameter used in the fatigue life prediction method can capture correctly different damage mechanisms (prop...
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Published in | International journal of manufacturing, materials, and mechanical engineering Vol. 10; no. 1; pp. 33 - 53 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Hershey
IGI Global
01.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | This article presents fatigue life calculations for metals under different multiaxial variable amplitude loading patterns. Developed from a stress-based multiaxial fatigue criterion, a damage parameter used in the fatigue life prediction method can capture correctly different damage mechanisms (proportional and non-proportional multiaxiality, mean stress, asynchronous and variable amplitude) of fatigue loading in the high cycle fatigue domain. The method is based on a reference S-N curve and a cumulative damage law. Assessment of the accuracy of the proposed method is carried out with three different materials from literature (EN-GS800-2 cast iron, 39NiCrMo3 steel and SAE 1045 steel) subjected to different patterns of variable amplitude loading (blocks, non-proportional asynchronous and proportional random loading). Results reveal that the prediction method is in good accordance with the experimental data. |
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ISSN: | 2156-1680 2156-1672 |
DOI: | 10.4018/IJMMME.2020010103 |