Influence of boundary conditions in FEM model on structural behaviour of thin-walled steel beams  strengthened by CFRP tapes

Katarzyna Rzeszut; Ilona Szewczak; Patryk Rozylo

doi:10.35784/bud-arch.1671

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Published: Aug 28, 2020

DOI: https://doi.org/10.35784/bud-arch.1671

Issue Vol. 19 No. 2 (2020)

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DOI

https://doi.org/10.35784/bud-arch.1671

Authors

Katarzyna Rzeszut

katarzyna.rzeszut@put.poznan.pl

Institute of Structural Engineering; Poznan University of Technology;, Poland

https://orcid.org/0000-0002-7134-608X

Ilona Szewczak

i.szewczak@pollub.pl

Department of Structural Engineering; Faculty of Civil Engineering and Architecture; Lublin University of Technology;, Poland

https://orcid.org/0000-0002-4953-0104

Patryk Rozylo

p.rozylo@pollub.pl

Faculty of Mechanical Engineering; Lublin University of Technology;, Poland

https://orcid.org/0000-0003-1997-3235

Abstract

The main aim of the study is verification and validation of FEM numerical model of beams made of thin-walled steel profiles retrofitted by CFRP tapes Sika CarboDur S. Validation is are carried out based on own laboratory tests conducted on “Blachy Pruszyński” S-type beams. The CFRP tape are bonded to the beam at compressed or tensioned flange. The most important part of this study is focused on investigation of boundary conditions influence in FEM model developed in Abaqus program. Moreover the numerical models are also tested in terms of different mesh density and types of finite elements. Numerical analyses are carried out using Newton-Raphson iterative method to solve non-linear equilibrium equation. In the paper special attention is paid to the evaluation of the possibility to increase the load capacity of the beams by appropriate localisation of CFRP tape.

Keywords:

thin-walled beam, CFRP, strengthening

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Rzeszut, K., Szewczak, I. and Rozylo, P. (2020) “Influence of boundary conditions in FEM model on structural behaviour of thin-walled steel beams strengthened by CFRP tapes”, Budownictwo i Architektura / Civil and Architectural Engineering, 19(2), pp. 073–085. doi: 10.35784/bud-arch.1671.

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