高速冲击泡沫铝填充管的瞬态分析
Transient Analysis of Foamed-Aluminum-filled pipes under High Velocity Impact Loading
aluminum has damping capacity and energy absorption chara cteristics.However,due to the lower sterngth of aluminum, ists carrying and energy absorption capabilities are Linited. Foamed-aliminum-filledsrtucture can improve the performance.Column shell ratio(R) was proposed,based on which,by nymerical simulation, the transient energy absorpption characterisitics of low density Duocel foamed-aluminum-filled thin wall square titanium energy absorption characteristics of low density Duocel aluminum foam-filled thin wall square titanium pipe and circular titanium pipe were investigated under 30m/s uniform velocity impact loading. The specific energy absorption of Duocel aluminum foam-filled square pipe is ES(F+P)A=0.438J; circle pipe is EC(F+P)A=0.344J. Energy absorption ability of Duocel fomed-aluminum-filled square pipe is better than that of circular pipe. The former is 1.273 times as much as the latter. The deformation mode and mechanical characteristics of foamed-aluminum column and pipe will be altered under mutual interaction and contraints. Buckling wavelength of square pipe well becomes shorterand the case is; just the contrary for circular pipe. The force-displacement curves and mechanicsal behaviors of famed-akunubum column and pipe are similar after agglutinated.
泡沫铝 / 填充结构 / 吸能 / 冲击作用 / 数值模拟 {{custom_keyword}} /
foamed aluminum / filled structure / energy absorption / impact loading / numerical simulation {{custom_keyword}} /
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