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泡沫铝夹芯双圆管结构的准静态轴向压缩性能研究
引用本文:郭刘伟,虞吉林,杨国栋.泡沫铝夹芯双圆管结构的准静态轴向压缩性能研究[J].实验力学,2011,26(2):181-189.
作者姓名:郭刘伟  虞吉林  杨国栋
作者单位:1. 中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽,合肥,230027;中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室,四川,绵阳,621900
2. 中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽,合肥,230027
基金项目:国家自然科学基金项目(90916026, 10672156, 11002140)资助
摘    要:对泡沫铝夹芯双圆管结构的准静态轴压性能进行了实验研究,发现该新型结构的比质量吸能效率远远高于传统的泡沫铝夹芯单管,并接近甚至超过相应的空管结构;其内外管变形模式均与空管不同且受内外管组合的影响.本文讨论了它的变形机理,分析了外管壁厚对其压缩行为的影响,发现增大外管壁厚有利于增大结构的行程利用率,提高结构的比质量能量吸收...

关 键 词:泡沫铝夹芯结构  准静态轴压实验  能量吸收效率

On the Quasi-Static Axial Crushing Behavior of Foam-Filled Double Cylindrical Tubes
GUO Liu-wei,YU Ji-lin and YANG Guo-dong.On the Quasi-Static Axial Crushing Behavior of Foam-Filled Double Cylindrical Tubes[J].Journal of Experimental Mechanics,2011,26(2):181-189.
Authors:GUO Liu-wei  YU Ji-lin and YANG Guo-dong
Institution:1.CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China; 2.Science and Technology on Shock Waves and Detonation Physics Laboratory, Institute of Fluid Physics, China Academy o;CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China
Abstract:Quasi-static axial crushing behavior of foam-filled double cylindrical tube was studied experimentally. It is found that the specific energy absorption efficiency of this new structure is much higher than that of traditional foam-filled single tube and approaches to or even higher than that of empty tube. The profile's deformation mode of this new structure differs from that of empty tube and depends on the inner and outer tube arrangement. The deformation mechanism was discussed. The effect of the outer tube thickness on its compressive behavior was also analyzed. Results show that thicker outer tube wall increases the stroke efficiency and the specific energy absorption of the structure. It is also found that the adhesive did not effect on the response of this new structure obviously.
Keywords:foam-filled tube structure  quasi-static axial crushing  mass efficiency of energy absorption
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