Improvement of Energy Absorption of Circular Tubes Subjected to High Velocity Impact
Improvement of Energy Absorption of Circular Tubes Subjected to High Velocity Impact
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DOI：
10.4028/www.scientific.net/amm.566.575
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
M. Higuchi;Shun-ichi Suzuki;T. Adachi;H. Tachiya
中科院分区：
文献类型：
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作者：
M. Higuchi;Shun-ichi Suzuki;T. Adachi;H. Tachiya
采用有限元分析和实验相结合的方法，研究了铝合金直圆管和阶梯圆管在高速冲击载荷作用下的动力学行为。对直管的有限元分析和实验表明，虽然增加的冲击速度增加了吸收的能量，通过压缩变形后的冲击，在固定端的峰值载荷不受速度。在此基础上，设计了一种在冲击端附近加厚的阶梯管，并对其进行了有限元分析。在较高速度的冲击过程中，阶梯管通过在较厚部分处的压缩变形吸收了大量的冲击能量，而没有从直管增加最大固定端载荷。
The dynamic behavior of circular straight and stepped tubes made of aluminum alloy under high-velocity impacts was investigated by performing finite element analyses (FEA) and an experiment. The FEA and experiment on the straight tubes suggested that while an increase in the impact velocity enhanced the absorbed energy through compressive deformation just after impact, the peak load at the fixed end was not affected by the velocity. A stepped tube that was thicker near the impacted end was designed on the basis of the results for the straight tubes, and its dynamic behavior was investigated through FEA. The stepped tube absorbed a large amount of impact energy through compressive deformation at the thicker portion during the higher-velocity impact, without increasing the maximum fixed-end load from that of the straight tube.