期刊
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
卷 110, 期 -, 页码 50-56出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijpvp.2013.04.021
关键词
Low cycle fatigue; Multiaxial loading; Non-proportional loading; Life prediction; Design criteria
资金
- Grants-in-Aid for Scientific Research [24560092] Funding Source: KAKEN
A simple and clear method of evaluating stress and strain ranges under non-proportional multiaxial loading where principal directions of stress and strain are changed during a cycle is needed for assessing multiaxial fatigue. This paper proposes a simple method of determining the principal stress and strain ranges and the severity of non-proportional loading with defining the rotation angles of the maximum principal stress and strain in a three dimensional stress and strain space. This study also discusses properties of multiaxial low cycle fatigue lives for various materials fatigued under non-proportional loadings and shows an applicability of a parameter proposed by author for multiaxial low cycle fatigue life evaluation. (C) 2013 Elsevier Ltd. All rights reserved.
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