Finite element analysis for fracture behavior of cracked beam-columns

Kishen, Chandra JM and Kumar, Avinash (2004) Finite element analysis for fracture behavior of cracked beam-columns. In: Finite Elements in Analysis and Design, 40 (13-14). pp. 1773-1789.

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Abstract

he 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.

Item Type:	Journal Article
Publication:	Finite Elements in Analysis and Design
Publisher:	Elsevier B. V.
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Critical load;Beam-column;Cracked columns.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	19 Dec 2008 03:41
Last Modified:	19 Sep 2010 04:54
URI:	http://eprints.iisc.ac.in/id/eprint/16946

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