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

Paper


Santhikumar, S.. 2009. "Uncertainty on application of bi-linear approximation to tension softening material near creep rupture region ." Aravinthan, Thiru, Karunasena, Warna and Wang, Hao (ed.) 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20). Toowoomba, Australia 02 - 05 Dec 2008 London, United Kingdom.
Paper/Presentation Title

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

Presentation TypePaper
Authors
AuthorSanthikumar, S.
EditorsAravinthan, Thiru, Karunasena, Warna and Wang, Hao
Journal or Proceedings TitleProceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM 20)
Number of Pages5
Year2009
Place of PublicationLondon, United Kingdom
ISBN9780415491969
Conference/Event20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20)
Event Details
Rank
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Event Details
20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20)
Parent
Australasian Conference on the Mechanics of Structures and Materials
Event Date
02 to end of 05 Dec 2008
Event Location
Toowoomba, Australia
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.

Keywordscoupled phenomena; creep response; creep ruptures; linear approximations; linear diagrams; static tension; tension softening; time dependence; time-dependent response
ANZSRC Field of Research 2020400505. Construction materials
490101. Approximation theory and asymptotic methods
401605. Functional materials
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsCentre of Excellence in Engineered Fibre Composites
Institution of OriginUniversity of Southern Queensland
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