本文主要利用分离式霍布金森压杆(SHPB)对泡沫铝进行了三种应变率(0.6×103/s、1.0×103/s和1.9×103/s)动态压缩实验.实验结果表明:泡沫铝的动态应力-应变曲线也具有泡沫材料的动态应力-应变曲线的"三阶段"特征,并且应变率对其影响明显,流动应力随着应变率的增加而增加,泡沫材料的力学性能更多地表现出泡沫结构特性.
参考文献
| [1] | Evans A G;Hutchinson.J.W;Ashby.M.F .Multifunction ality of cellular metal systems[J].Progress in Materials Science,1999,43:171-221. |
| [2] | Lorna J;Gibson Michael F;Ashby.Cellular solids:Structure a nd Properties pp203-208[M].Cambridge:Cambridge University Press,1997 |
| [3] | Han Fusheng;Zhu Zhengang et al.The mechanical behavior o f foamed aluminum[J].Journal of Materials Science,1999,34:291-299. |
| [4] | Han Fusheng;Zhu Zhengang et al.Compressive Deformation a nd Energy Absorbing Characteristic of Foamed Aluminum[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29:2497. |
| [5] | Stronge W J.Mechan ical Behavior of Materials,Kyoto Editors J.Masahiro and T.Inoue[J].Proc 6th Int Conf,1991:377-382. |
| [6] | Deshpande V S;Fleck N A .High strain rate compressive behav ior of aluminium alloy foams[J].International Journal of Impact Engineering,2000,24:277-298. |
| [7] | Kathryn A. Dannemann;James Lankford Jr. .High strain rate compression of closed-cell aluminium foams[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):157-164. |
| [8] | 刘剑飞;王正道;胡时胜 .低阻抗多孔介质材料的SHPB实验技术[J].实验力学,1998,13(02):218-223. |
| [9] | 胡时胜;刘剑飞;王梧 .硬质聚氨酯泡沫塑料本构关系的研究[J].力学学报,1998,30(02):151-155. |
| [10] | Lorna J Gibson;Mich Ashby.Cellular solids:Structure and Properties pp247-250[M].Cambridge:Cambridge University Press,1997 |
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