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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4894
Title: Fatigue crack propagation model and size effect in concrete using dimensional analysis
Authors: Ray, Sonalisa
Chandra Kishen J.M.
Published in: Mechanics of Materials
Abstract: It is well known that fatigue in concrete causes excessive deformations and cracking leading to structural failures. Due to quasi-brittle nature of concrete and formation of a fracture process zone, the rate of fatigue crack growth depends on a number of parameters, such as, the tensile strength, fracture toughness, loading ratio and most importantly the structural size. In this work, an analytical model is proposed for estimating the fatigue crack growth in concrete by using the concepts of dimensional analysis and including the above parameters. Knowing the governed and the governing parameters of the physical problem and by using the concepts of self-similarity, a relationship is obtained between different parameters involved. It is shown that the proposed fatigue law is able to capture the size effect in plain concrete and agrees well with different experimental results. Through a sensitivity analysis, it is shown that the structural size plays a dominant role followed by loading ratio and the initial crack length in fatigue crack propagation. ¬© 2010 Elsevier Ltd. All rights reserved.
Citation: Mechanics of Materials(2011), 43(2): 75-86
URI: https://doi.org/10.1016/j.mechmat.2010.12.002
http://repository.iitr.ac.in/handle/123456789/4894
Issue Date: 2011
Keywords: Dimensional analysis
Fatigue
Fracture energy
Plain concrete
Self-similarity
Size-effect
ISSN: 1676636
Author Scopus IDs: 57199001944
6506178790
Author Affiliations: Ray, S., Department of Civil Engineering, Indian Institute of Science, Bangalore 560 012, India
Chandra Kishen, J.M., Department of Civil Engineering, Indian Institute of Science, Bangalore 560 012, India
Corresponding Author: Chandra Kishen, J. M.; Department of Civil Engineering, Indian Institute of Science, Bangalore 560 012, India; email: chandrak@civil.iisc.ernet.in
Appears in Collections:Journal Publications [CE]

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