Finite element analysis for fracture behavior of cracked beam-columns

被引：21

作者：

Kishen, JMC ^{[1
]}

Kumar, A ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Civil Engn, Bangalore 560012, Karnataka, India

来源：

FINITE ELEMENTS IN ANALYSIS AND DESIGN | 2004年 / 40卷 / 13-14期

关键词：

critical load; beam-column; cracked columns;

D O I：

10.1016/j.finel.2004.01.003

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The fracture behavior of cracked beam-columns with different load eccentricities is studied. A cracked beam-column element, developed previously by Tharp (Int. J. Numer. Methods Eng. 24 (1987) 1941) is implemented into a finite element code to study the behavior of cracked beam-columns subjected to axial and lateral loads. Assuming that failure occurs due to crack propagation when the mode I stress intensity factor reaches the fracture toughness of the material, the failure load of cracked columns are determined for different crack depths and slenderness ratios. It is observed that the presence of crack decreases the critical load of columns and this decrease is small for short cracks and long columns. The presence of crack has no effect on the critical load for columns with slenderness ratios 180 and above. In addition, the presence of crack makes the relation between lateral load and lateral deflection bi-linear in a beam-column subjected to axial compressive load. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1773 / 1789

页数：17

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