Finite element simulation of ultra low cycle fatigue cracking in steel structures

被引：31

作者：

Amiri, H. R. ^{[1
]}

Aghakouchak, A. A. ^{[1
]}

Shahbeyk, S. ^{[1
]}

Engelhardt, M. D. ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Fac Civil & Environm Engn, Tehran, Iran

[2] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2013年 / 89卷

关键词：

Ultra-low cycle fatigue; Cyclic void growth; Ductile fracture; Crack propagation; Steel structures; DUCTILE FRACTURE; PREDICTION; STRENGTH;

D O I：

10.1016/j.jcsr.2013.07.007

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper proposes a new method of simulating ductile fracture in steel structures under large amplitude cyclic straining experienced in earthquakes. The method is developed based on an existing micromechanical model originally proposed for predicting crack initiation in ultra-low cycle fatigue, ULCF. It involves a step-by-step simulation of material degradation within the framework of conventional nonlinear FEM. The method is validated through simulating fracture in a structural detail (column-to-base plate connection) for which several cyclic tests has been previously conducted. It is found that the method can successfully predict the cracking site, its propagation path, the number of cycles corresponding to crack initiation, and also final fracture. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：175 / 184

页数：10

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