Numerical modelling of three-dimensional fatigue crack closure: Plastic wake simulation

被引：18
作者：
Camas, D. [1 ]
Garcia-Manrique, J. [1 ]
Perez-Garcia, F. [1 ]
Gonzalez-Herrera, A. [1 ]
机构：
[1] Univ Malaga, Dept Ingn Civil Mat & Fabricat, Escuela Ingn Ind, C Doctor Ortiz Ramos S-N,Campus Teatinos, E-29071 Malaga, Spain
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 131卷
关键词：
Finite element analysis; Fatigue crack closure; Plastic wake; Crack growth; STRESS INTENSITY FACTOR; FINITE-ELEMENT-ANALYSIS; THICKNESS; METHODOLOGY; GROWTH; FIELDS; SHAPE; SIZE;
D O I：
10.1016/j.ijfatigue.2019.105344
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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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页数：9
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