Stress intensity factors for structural steel I-beams

被引：9
|
作者：
Albrecht, Pedro
Lenwari, Akhrawat [1 ]
Feng, Daqing [2 ]
机构：
[1] Chulalongkorn Univ, Dept Civil Engn, Nakhon 26120, Nayak, Thailand
[2] Univ Maryland, Dept Civil & Environm Engn, College Pk, MD 20742 USA
来源：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE | 2008年 / 134卷 / 03期
关键词：
D O I：
10.1061/(ASCE)0733-9445(2008)134:3(421)
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The finite element method was used to develop accurate stress intensity factor (SIF) solutions for two-tip web cracks and symmetric three-tip cracks in I-beams under tension or bending. Governing parameters for cracked I-beams were determined. For web cracks, the SIF is a function of applied stress, crack length, eccentricity, and flange-to-web area ratio of W shape. For three-tip cracks in web and flange, the SIF is a function of applied stress, web and flange crack lengths, and flange-to-web area ratio. The flange-to-web area ratio accounts for the constraining effect of the flange on two-tip web cracks and the interaction effect on three-tip cracks. A total of 2,106 combinations of type of crack, type of loading, crack length, eccentricity, and flanges-to-web area ratio were analyzed. Numerical results were fitted with polynomial equations for ready use by practicing engineers.
引用
收藏
页码：421 / 429
页数：9
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