Uncertainty on application of bi-linear approximation to tension softening material near creep rupture region

Santhikumar, S. (2009) Uncertainty on application of bi-linear approximation to tension softening material near creep rupture region. In: 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20): Futures in Mechanics of Structures and Materials, 2-5 Dec 2008, Toowoomba, Australia.

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Abstract

Tension softening and time-dependence of fracture are coupled phenomena and these have to be taken into account in order to identify the realistic behaviour of concrete. Tension softening behaviour of concrete is generally approximated to bi-linear diagram for simplicity. A thorough study is made of the applicability of this commonly used bi-linear approximation for the static tension-softening response of concrete to predicting its time-dependent response. It is found that the bi-linear approximation predicts a totally wrong creep response in the tertiary region close to creep rupture. The reason for this severe inadequacy is discussed.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2009 Taylor & Francis Group, London. Permanent restricted access to published version in accordance with the copyright policy of the publisher. Held USQ Library 624 Fut
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 09 Oct 2014 23:48
Last Modified: 09 Oct 2014 23:54
Uncontrolled Keywords: coupled phenomena; creep response; creep ruptures; linear approximations; linear diagrams; static tension; tension softening; time dependence; time-dependent response
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
01 Mathematical Sciences > 0102 Applied Mathematics > 010201 Approximation Theory and Asymptotic Methods
09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials
URI: http://eprints.usq.edu.au/id/eprint/20885

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