文章基本信息

标题：Numerical Simulation and Experimental Study on Jet Forming and Penetration Performance of Zr-based Amorphous Alloy Liner
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作者：Dongmei Shi ; Yuling Zhang ; Deshi Wang 等
期刊名称：Engineering Letters
印刷版ISSN：1816-093X
电子版ISSN：1816-0948
出版年度：2021
卷号：29
期号：1
页码：151-157
语种：English
出版社：Newswood Ltd
摘要：It is an important trend for the development ofshaped charge (SC) technology to use energetic material inliner. As a new metastable energetic material, zirconium (Zr)based amorphous alloy has incomparable advantages overother energetic materials. In order to understand the jetforming law of Zr-based amorphous alloy liner andacquire an accurate understanding of the influence of keyfactors such as cone angle and wall thickness on the jetparameters of this kind of liner, the conical ZrCuNiAlAgamorphous alloy liner is taken as a research object and somenumerical simulation of the jet forming process are carried outincluding 5 cone angles under certain wall thickness conditionsand 5 kinds of wall thicknesses under certain cone angleconditions based on AUTODYN software. The static explosiontests of Zr-based amorphous alloy liner against steel targetplate are carried out as well. The results show that the conicalZrCuNiAlAg amorphous alloy liner can form a stable andcontinuous jet with a spindle shape under the action ofexplosive products. In a certain range, both the tip velocity andlength diameter ratio (LDR) of the jet decrease with theincreasing cone angle and wall thickness of the liner. Theaverage penetration depth of a conical ZrCuNiAlAgamorphous alloy liner with 40° cone angle and 1.2mm wallthickness against 45# steel target plate is 97.5mm at thestand-off distance of 3 times of charge diameter (CD). Thediameter of perforation entrance is 25mm. The deflagrationreaction and the deflagration products' reverse flight andstrong erosion through the orifice are the main reasons for theformation of "large diameter, small penetration depth"perforation by the jet, which shows obvious energy-releasingcharacteristics in the process of penetration. The above resultshave certain guiding significance for the structural design ofZr-based amorphous alloy liner and the SC.
关键词：Shaped charge; Zr-based amorphous alloy; jet forming; liner; wall thickness; cone angle