Dual Boundary Element Method in Modeling of Fatigue Crack Propagation

被引：0

作者：

Ihsan, Ahmad Kamal Ariffin Mohd ^{[1
]}

Mohamed, Nik Abdullah Nik ^{[1
]}

Romlay, Fadhlur Rahman Mohd ^{[2
]}

机构：

[1] Univ Kebangsaan Malaysia, Computat Mech Grp, Fac Engn & Built Environm, Ukm Bangi 43600, Selangor, Malaysia

[2] Kolej Univ Kejuruteraan & Teknol Malaysia KUKTEM, Fac Mech Engn, Kuantan 25000, Pahang, Malaysia

来源：

JURNAL KEJURUTERAAN | 2008年 / 20卷

关键词：

Crack propagation; fatigue; Monte Carlo; boundary element method;

D O I：

10.17576/jkukm-2008-20-05

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper deals with the modelling of fatigue crack propagation on a centre member bar using a dual boundary element nnethod. The effects of life cycle to the multiple site fatigue crack propagation were studied. Analysis of stress intensity factor was performed by the deterministic approach using a dual boundary element nnethod. The dual boundary element method was used to simplify the crack model through the numerical approach. The complex problems have been solved using the information from a boundary condition only. Next, the initial crack and life cycle of the structure have been predicted using probabilistic method which is Monte Carlo. The crack size and fatigue life were computed until failure of the structure. The failure analysis was performed by a linear elastic fracture mechanics. The scenarios of the fatigue crack propagation were given by an integration of both dual boundary element and Monte Carlo method. Therefore, fatigue life of multiple site crack structure can be predicted.

引用

页码：45 / 55

页数：11

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