Study on Dynamic Response Characteristics of Composite Thin-Walled Square Beam Subject to Three-Point Bending

Abstract:

In this paper, the experiment of thin-walled square beam subject to three-point bending by using the self-devised drop-hammer impact was carried out. The mechanical behavior of this thin-walled specimen under impact load was obtained. The process of deformation and the dynamic buckling behaviors of composite square beam were analyzed by mean of simulation technique of finite element using ANSYS/LS-DYNA. The simulation analysis of deformation and crushing force characteristics was in good agreement with the experimental results. Meanwhile, the comparative analysis of percussive force and energy absorbability from composite beam and single beam was performed. It is shown by the investigation that the peak percussive force of such composite beam falls down relative to single beam and it possesses good energy absorbability too. The computed result also shows reducing the thickness of the bottom board of such thin-walled square beam has less of an effect on the energy absorbability.

• Periodical: Applied Mechanics and Materials (Volumes 201-202)
• Pages: 715-720
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.201-202.715
• Online since: October 2012
• Authors: Gang Yi Zhou, Xin Long Dong, Jun Liu
• Keywords: Composite Thin-Walled Square Beam, Drop-Hammer Impact, Energy Absorption, Three-Point Bending

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