【摘要】 泡沫铝填充方铝管在高速冲击载荷作用下,由于应力波的传播和惯性效应等的作用,试件并非处于受力平衡的均匀应力状态,上下底面的受力会有很大的差别。采用LS-DYNA研究泡沫铝填充方铝管和泡沫铝柱在30m/s的匀速冲击载荷作用下的瞬态吸能和上下底面的冲量特性,并与准静态模型做比较。研究发现泡沫铝填充方铝管的吸能较准静态提高20.9%,上底面的冲量比下底面高10.4%,下底面的最大峰值力比准静态时仅升高8.8%。更多还原

【Abstract】 Foamed aluminium-filled square aluminium pipe under the action of high impulsive load is not in the homogeneous state of stress because of the action of the propagation of stress wave and inertial effect.Its force of top and bottom is different.Transient energy absorption and impulse of top and bottom of foamed aluminium-filled square aluminium pipe and foamed aluminium under the action of 30m/s uniform motion impact loading are researched and it’s compared with quasi-static process by LS-DYNA.Energy absorption of foamed aluminium-filled square aluminium pipe increases by 20.9%.Impulse of top increases by 10.4%.Maximal force of bottom only increase by 8.8%.更多还原