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Experimental and theoretical study on FRP Sandwich Panel

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Document pages: 12 pages

Abstract: In this study, a new type of composite sandwich panel is proposed, which takes steel plate as the panel and bonded glass fiber reinforced polymer (GFRP) pultruded hollow square tube as the core. In this new type of panel, GFRP and steel are optimized to obtain high bending stiffness, strength and good ductility. The four point bending test is carried out, and the distribution of stress, strain, mid span deflection and ultimate failure mode are analyzed. The section transformation method is used to calculate the stress and mid span deflection of the sandwich plate. The theoretical values, experimental results and finite element simulation values are compared, and the results show that they are in good agreement. The influence of steel panel thickness on mid span deflection and stress is simulated. The results show that that the mid-span deflection and stress decreased and the decent speed was getting smaller as the thickness of steel facesheet increases. A most effective thickness of steel facesheet was advised.

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