Stress analysis of steel beams reinforced with a bonded CFRP plate

被引:194
作者
Deng, J [1 ]
Lee, MMK [1 ]
Moy, SSJ [1 ]
机构
[1] Univ Southampton, Dept Civil & Environm Engn, Southampton SO17 1BJ, Hants, England
关键词
stress analysis; carbon fibre plates; adhesive bonding; steel beams; finite elements;
D O I
10.1016/j.compstruct.2003.10.017
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The use of carbon fibre reinforced polymers (CFRP) composites to upgrade structures and, in particular, to e x-tend 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. (C) 2003 Elsevier Ltd. All rights reserved.
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页码:205 / 215
页数:11
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