期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 131, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2019.105344
关键词
Finite element analysis; Fatigue crack closure; Plastic wake; Crack growth
资金
- Ministerio de Economia y Competitividad of the Spanish Government [MAT2016-76951-C2-2-P]
Finite element method has been broadly used to study fatigue crack closure. The simulated plastic wake length is one of the key modelling parameters involved. This paper presents a complete analysis in fatigue crack closure 3D models. It is aimed at two aspects: the influence on the calculation of opening and closure values, and the effect on other main results. Conclusion indicates a 0.6 times Dugdale's plastic size length to stabilise results as plastic zone or contact area, but a reduced length could be acceptable in terms of crack closure results. This suggests some independence among this parameter and fatigue crack closure.
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