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Stress analysis of steel beams reinforced with a bonded CFRP plate

Stress analysis of steel beams reinforced with a bonded CFRP plate
Stress analysis of steel beams reinforced with a bonded CFRP plate
The use of carbon fibre reinforced polymers (CFRP) composites to upgrade structures and, in particular, to extend the lives of steel beams has wide applications. An important feature of the reinforced beam is the significant stress concentration in the adhesive at the ends of CFRP plate, where there is a discontinuity caused by the abrupt termination of the plate. In this paper, an analytical solution is presented to calculate the stresses in the reinforced beam under mechanical as well as thermal loads. The solution has been extended by a numerical procedure to CFRP plates with tapered ends, which can significantly reduce the stress concentration. Finite element analysis was employed to validate the analytical results, and a parametric study was carried out to show how the maximum stresses have been influenced by the dimensions and the material properties of the adhesive and the adherends.
0263-8223
205-215
Deng, Jun
f03d158c-d44c-45d5-90c5-4f195bdf8216
Lee, Marcus M. K.
761bf1f1-cfee-4a9d-826e-2d6f4f31c8de
Moy, Stuart S. J.
d1b1f023-d32a-4b00-8a3f-17c89f91a51e
Deng, Jun
f03d158c-d44c-45d5-90c5-4f195bdf8216
Lee, Marcus M. K.
761bf1f1-cfee-4a9d-826e-2d6f4f31c8de
Moy, Stuart S. J.
d1b1f023-d32a-4b00-8a3f-17c89f91a51e

Deng, Jun, Lee, Marcus M. K. and Moy, Stuart S. J. (2004) Stress analysis of steel beams reinforced with a bonded CFRP plate. Composite Structures, 65 (2), 205-215. (doi:10.1016/j.compstruct.2003.10.017).

Record type: Article

Abstract

The use of carbon fibre reinforced polymers (CFRP) composites to upgrade structures and, in particular, to extend the lives of steel beams has wide applications. An important feature of the reinforced beam is the significant stress concentration in the adhesive at the ends of CFRP plate, where there is a discontinuity caused by the abrupt termination of the plate. In this paper, an analytical solution is presented to calculate the stresses in the reinforced beam under mechanical as well as thermal loads. The solution has been extended by a numerical procedure to CFRP plates with tapered ends, which can significantly reduce the stress concentration. Finite element analysis was employed to validate the analytical results, and a parametric study was carried out to show how the maximum stresses have been influenced by the dimensions and the material properties of the adhesive and the adherends.

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Published date: 2004

Identifiers

Local EPrints ID: 39417
URI: http://eprints.soton.ac.uk/id/eprint/39417
ISSN: 0263-8223
PURE UUID: 1310f7d8-f944-4d7d-9cd2-d66da2964421

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Date deposited: 28 Jun 2006
Last modified: 15 Jul 2019 19:01

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