期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 59, 期 -, 页码 170-175出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2013.08.028
关键词
Multiaxial fatigue; Life prediction; Critical plane approach; Nonproportional loading; Additional cyclic hardening
资金
- National Defense Basic Scientific Research Project of China
Both proportional and nonproportional tension-torsion fatigue tests were conducted on titanium alloy TC4 tubular specimens. Six multiaxial fatigue parameters are reviewed and evaluated with life data obtained in the tests. It is found that the effective strain, the maximum shear strain and the Smith-Watson-Topper (SWT) criteria tend to give non-conservative results under nonproportional loading. The shear strain-based critical plane approaches, especially Wu-Hu-Song (WHS) approach show better life prediction abilities. The prediction results based on WHS parameter are all within a factor of two scatter band of the test results. (C) 2013 Elsevier Ltd. All rights reserved.
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