Mechanism Elucidation of High-Pressure Generation in Cellular Metal at High-Velocity Impact
Mechanism Elucidation of High-Pressure Generation in Cellular Metal at High-Velocity Impact
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DOI：
10.3390/met12010128
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发表时间：
2022-01
期刊：
影响因子：
2.9
通讯作者：
M. Nishi;Shigeru Tanaka;A. Mori;M. Vesenjak;Z. Ren;K. Hokamoto
中科院分区：
文献类型：
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作者：
M. Nishi;Shigeru Tanaka;A. Mori;M. Vesenjak;Z. Ren;K. Hokamoto
细胞金属表现出不同的性质，这取决于它们的几何形状和基材。研究了单向多孔材料在高速撞击过程中产生高压的机理。将立方单孔铜试样装在弹丸上，用火药枪进行冲击加载，以诱导试样的直接冲击。在压缩过程中，试样在孔隙附近表现出独特的高压生成现象。我们阐明了高压现象的机理，并讨论了有助于高压产生的孔隙几何形状。
Cellular metals exhibit diverse properties, depending on their geometries and base materials. This study investigated the mechanism of high-pressure generation during the high-velocity impact of unidirectional cellular (UniPore) materials. Cubic UniPore copper samples were mounted on a projectile and subjected to impact loading using a powder gun to induce direct impact of samples. The specimens exhibited a unique phenomenon of high-pressure generation near the pores during compression. We elucidate the mechanism of the high-pressure phenomenon and discuss the pore geometries that contribute to the generation of high pressures.