冲击载荷下薄壁组合矩形梁响应特性研究

在落锤冲击下对薄壁组合矩形梁进行了实验及有限元分析,对薄壁组合矩形梁及薄壁单层矩形梁在落锤冲击下的力-位移、能量吸收特性进行了比较分析,并对薄壁组合矩形梁的变形屈曲特征、过程及不同冲击速度下的吸能情况进行了分析.结果表明：在相同横截面积及质量情况下,薄壁组合矩形梁较薄壁单层矩形梁具有更好的刚度及抗冲击能量吸收能力.

Investigation of Dynamic Response of Thin-walled Composite Rectangular Beams

We analyze the thin-walled rectangular beams by virtue of the experimental measures and FEM under the drop hammer. Comparisons are made between the force-deflection and energy absorption, also between the thin-walled composite rectangular beams and the thin-walled single rectangular beams. We also investigate the buckling characteristics, process of the thin-walled composite rectangular beams under the different impact speeds. The result shows that, compared with the thin-walled single composite beam, the t...