STUDY ON BENDING STIFFNESS OF CFRP BOX BEAM CROSS-SECTION PARAMETERS

Abstract

Abstract: In this paper, the finite element software Abaqus is used to simulate and analyze the influence of cross-section parameters of box beam on its bending stiffness, including the beam section height, the upper and lower flange wall thickness, the upper flange wall thickness and the lower flange wall thickness, so as to improve its bending stiffness when the weight of the beam was unchanged, and compare with the same size of metal materials. The results show that the bending stiffness of CFRP box girder can be improved effectively by increasing the section height of the beam, thickening the upper and lower flange and thickening the upper flange. The bending stiffness of the lower flange thickening is the most effective, and thickening of the upper flange is the worst, which provides a reference for the design optimization of composite material box beam and has a certain practical value.

Key words: carbon fiber reinforced, box beam, section parameters, flexural stiffness

CLC Number:

TB333

YANG Hai-ru, YUAN Wei, CHEN Guo-zhi, FANG Jian. STUDY ON BENDING STIFFNESS OF CFRP BOX BEAM CROSS-SECTION PARAMETERS[J]. Fiber Reinforced Plastics/Composites, 2019, 0(6): 53-57.

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