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Comparison of different methods for viscoelastic analysis of composite beams

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2019
Mehanika2019KosticDereticStojanovic.pdf (1.043Mb)
Authors
Kostić, Svetlana M.
Deretic-Stojanovic, Biljana
Conference object (Published version)
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Abstract
The paper presents and compares four methods for visco-elastic analysis of steel-concrete composite beams. The method denoted as "exact" is based on the use of linear integro-differential operators and besides inevitable approximations of the rheological properties of constituent materials does not introduce other mathematical simplifications. The underlying assumption of the simplified method is that unknown deformations change linearly with the concrete creep function. In the paper, the results of the analysis of continuous composite beam obtained using the mentioned two methods are compared with results of widely used the Effective modulus method and its modified form proposed by Eurocode 4. Results have shown that the simplified method gives solutions closest to the “exact” analysis method.
Keywords:
viscoelastic analysis / composite beams / matrix stiffness method / linear integral operators
Source:
Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019
Publisher:
  • Serbian Society of Mechanics
Projects:
  • info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIRor III)/42012/RS// (RS-42012)

ISBN: 978-86-909973-7-4

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URI
https://grafar.grf.bg.ac.rs/handle/123456789/2128
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  • Radovi istraživača / Researcher's publications
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