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Fracture Analysis of High strength and Ultra high strength Concrete beams by using Finite Element Method

Murthy, Ramachandra A and Iyer, Nagesh R and Prasad, Raghu BK (2012) Fracture Analysis of High strength and Ultra high strength Concrete beams by using Finite Element Method. In: CMC-COMPUTERS MATERIALS & CONTINUA, 30 (2). pp. 177-194.

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Official URL: http://www.techscience.com/doi/10.3970/cmc.2012.03...

Abstract

This paper presents the details of nonlinear finite element analysis (FEA) of three point bending specimens made up of high strength concrete (HSC, HSC1) and ultra high strength concrete (UHSC). Brief details about characterization and experimentation of HSC, HSC1 and UHSC have been provided. Cracking strength criterion has been used for simulation of crack propagation by conducting nonlinear FEA. The description about FEA using crack strength criterion has been outlined. Bi-linear tension softening relation has been used for modeling the cohesive stresses ahead of the crack tip. Numerical studies have been carried out on fracture analysis of three point bending specimens. It is observed from the studies that the computed values from FEA are in very good agreement with the corresponding experimental values. The computed values of stress vs crack width will be useful for evaluation of fracture energy, crack tip opening displacement and fracture toughness. Further, these values can also be used for crack growth study, remaining life assessment and residual strength evaluation of concrete structural components.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to TECH SCIENCE PRESS, NORCROSS,
Keywords: High strength concrete;Ultra high strength concrete;Characterization;Finite element analysis
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Francis Jayakanth
Date Deposited: 15 Dec 2012 05:04
Last Modified: 15 Dec 2012 05:04
URI: http://eprints.iisc.ac.in/id/eprint/45562

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