期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 33, 期 2, 页码 250-254出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2010.08.015
关键词
Multiaxial fatigue; Cycle counting; Fatigue damage; Life prediction
资金
- National Natural Science Foundation of China [50975005, 51010006, 50710105077]
- Beijing Municipal Natural Science Foundation [3092003]
- Beijing Education Committee [KZ201010005003]
An on-line algorithm of fatigue damage evaluation was proposed by modifying Wang-Brown's method under multiaxial random loading. Wang-Brown's method requires rearrangement for the strain history before the counting process starts, which is not suitable for on-line fatigue damage evaluation. So an algorithm based on simple range counting for equivalent relative strain was presented first, and then an on-line algorithm was proposed by defining the fatigue damage in each reversal as rain-flow counting parameter. The proposed on-line algorithm does not require any rearrangement for the strain history and the fatigue damage can be evaluated on-line. (C) 2010 Elsevier Ltd. All rights reserved.
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