Numerical investigation of CFRP strengthened RHS members under cyclic loading

Tafsirojjaman, T. ORCID: and Fawzia, Sabrina and Thambiratnam, David and Zhao, X. L. (2020) Numerical investigation of CFRP strengthened RHS members under cyclic loading. Structures, 24. pp. 610-626.

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Rectangular hollow section (RHS) steel members are commonly utilized in various mechanical and civil engineering applications, but they have shown to be quite vulnerable under cyclic loading. In both onshore and offshore infrastructure, steel members can be subjected to cyclic loading produced by earthquakes, currents, wind and waves. Considering multiple factors, such as design errors, the influence of environmental conditions, an increase in applied loads and material deterioration, steel members may require strengthening to withstand cyclic loadings. This study presents numerical simulations using Finite Element (FE) modelling techniques to analyse carbon fibre reinforced polymer (CFRP) strengthened RHS steel members subjected to cyclic loading to predict their behaviour and modes of failure. The predicted results are compared with available results from experimental tests to validate the numerical models and ensure their accuracy. Results imply that CFRP strengthened RHS steel members demonstrate enhanced cyclic performance in which the moment-rotation hysteresis behaviour, secant stiffness and the energy dissipating capacity are improved compared those in bare steel RHS members. Furthermore, the effects of section thickness, bond length of CFRP, number of CFRP layers, wrapping orientation of CFRP and elastic modulus of CFRP on the response of these structural members are also investigated through detailed parametric studies.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Submitted Version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 02 Aug 2021 02:57
Last Modified: 09 Sep 2021 04:57
Uncontrolled Keywords: CFRP (carbon fibre reinforced polymer), cyclic loading, finite element modelling, Rectangular Hollow Section (RHS) Steel members, strengthening, CFRP
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090599 Civil Engineering not elsewhere classified
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0905 Civil Engineering > 090504 Earthquake Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400506 Earthquake engineering
40 ENGINEERING > 4005 Civil engineering > 400599 Civil engineering not elsewhere classified
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
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