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中文摘要：
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效率。实验研究还发现,管壁与泡沫铝夹芯间粘合的效果并不明显。
英文摘要：
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.
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