ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Residual fatigue strength assessment of concrete considering tension softening behavior

Sain, Trisha and Kishen, Chandra JM (2007) Residual fatigue strength assessment of concrete considering tension softening behavior. In: International Journal of Fatigue, 29 (12). pp. 2138-2148.

[img] PDF
sdarticle.pdf
Restricted to Registered users only

Download (211Kb) | Request a copy

Abstract

In this study, the residual strength of plain concrete beams under fatigue loading is assessed. The quasi-brittle nature of the material is considered by including the effect of tension-softening taking place in the fracture process zone. A two step approach is followed. In the first step, the effective critical crack length for unstable fracture to occur is determined by using two different methods, namely a modified $LEFM$ based fatigue crack propagation law and the crack resistance method. In the second step, the moment carrying capacity as a function of increasing effective crack length is obtained in order to assess the residual strength of the member. A parametric study is performed by considering three different softening laws: linear, bilinear and power laws. It is seen that the bilinear softening law matches close to the experimental predictions of other investigators.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Fatigue;Fracture;Strain softening;Residual strength
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 12 Jun 2008
Last Modified: 19 Sep 2010 04:45
URI: http://eprints.iisc.ernet.in/id/eprint/14258

Actions (login required)

View Item View Item