Prediction of load-deflection behaviour using fracture energy GF: A comparative study of two fracture models for concrete

Iyengar, Sundara Raja KT and Raghuprasad, BK and Nagaraj, TS and Patel, Bharti (1993) Prediction of load-deflection behaviour using fracture energy GF: A comparative study of two fracture models for concrete. In: Engineering Fracture Mechanics, 46 (1). 27-33 .

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Abstract

Load-deflection curves for a notched beam under three-point load are determined using the Fictitious Crack Model (FCM) and Blunt Crack Model (BCM). Two values of fracture energy GF are used in this analysis: (i) GF obtained from the size effect law and (ii) GF obtained independently of the size effect. The predicted load-deflection diagrams are compared with the experimental ones obtained for the beams tested by Jenq and Shah. In addition, the values of maximum load (Pmax) obtained by the analyses are compared with the experimental ones for beams tested by Jenq and Shah and by Bažant and Pfeiffer. The results indicate that the descending portion of the load-deflection curve is very sensitive to the GF value used.

Item Type:	Journal Article
Publication:	Engineering Fracture Mechanics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	23 Feb 2011 05:46
Last Modified:	23 Feb 2011 05:46
URI:	http://eprints.iisc.ac.in/id/eprint/35696

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