泡沫铝夹芯梁抗爆性能的数值模拟分析  

Finite Element Analysis of Anti-blasting Performance of Aluminum Foam Sandwich Beam

作　　者：康建功[1] 石少卿[1] 刘颖芳[1] 汪敏[1] 

机构地区：[1]后勤工程学院军事建筑工程系,重庆400041

出　　处：《爆破》2009年第3期10-13,共4页Blasting

基　　金：总后基建营房部项目;重庆市科委自然科学基金(CSTC:2005BB4162)

摘　　要：运用有限元软件LS-DYNA分析重量相同的2种材料梁在爆炸荷载作用下的动力响应,其中一种由304#不锈钢面板与泡沫铝芯材复合而成的夹芯梁,另一种由304#不锈钢单一材料制成的实体梁。对比了相同重量2种梁在跨中位移的变化情况,并将泡沫铝夹芯梁的计算结果与文献实验数据作了对比分析。结果显示,在冲量分别为1.83 kNs/m2、3.77 kNs/m2、6.08 kNs/m2及7.0 kNs/m2动荷载作用下,304#不锈钢实体梁的跨中位移分别是304#不锈钢面板泡沫铝夹芯梁跨中位移的1.1倍、1.35倍、1.26倍及1.14倍。由此可知,相同重量304#不锈钢面板泡沫铝夹芯梁较304#不锈钢实体梁具有更好抵抗爆炸荷载作用的能力。The dynamic response of two type beam with same weight were studied with FEM software LS-DYNA. One is sandwich beam made of two 304# stainless steel face sheet and aluminum foam core, the other is monolithic beam made of 304# stainless steel. The mid-span deflection of sandwich beam was compared with that of monolithic beam and sandwich beam mid-span deflection of experimental. The results show that the mid-span deflection of mon- olithic beam is bigger than that of sandwich beam. When impulse level is at 1.83 kNs/m2, 3.77 kNs/m2, 6.08 kNs/m2 and 7.0 kNs/m2 , the mid-span deflection of monolithic beam is 1.1 times, 1.35 times, 1.26 times and 1.14 times as big as that of sandwich beams accordingly. The sandwich beam show a better anti-blasting performance than monolithic beam with the same weight.

关 键 词：抗爆性能 泡沫铝夹芯梁 304#不锈钢 抗爆炸荷载 

分 类 号：O383[理学—流体力学]