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Numerical Simulation and Experimental Study on Jet Forming and Penetration Performance of Zr-based Amorphous Alloy Liner

机译:ZR基非晶合金衬里喷射形成和渗透性能的数值模拟与实验研究

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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.
机译:它是开发的Charge(SC)技术的发展,使用精力充沛的材料。作为一种新的亚铁能量材料,锆(ZR)基的无定形合金具有温度高昂的优势的优势。为了理解的jetforming法锆基非晶合金衬垫andacquire keyfactors如锥角和壁厚对这种衬里的jetparameters的影响的准确理解,锥形ZrCuNiAlAgamorphous合金衬垫被作为研究对象在某些壁厚条件下在某些基于Autodyn软件的某些锥形臂下,在某些壁厚条件下携带5种锥形角度的射流形成过程的调整。 Zr基非晶合金衬板对钢靶板的静态爆炸率也是如此进行。结果表明,锥形ZrcunialAg非晶合金衬里可以在爆发产品的作用下形成稳定的和连续的喷射,轴形。在一定范围内,喷射的尖端速度和长直径比(LDR)与衬里的锥角和衬里的壁厚减小。锥形Zrcunialagamorphory合金衬里的螺旋型渗透深度,具有40°锥角和1.2mm的碎片对抗45#钢目标板的距离为97.5mm,距离直径3次的距离(CD)。穿孔入口的表现为25mm。通过孔口的脱胀反应和脱液产品的反向飞行和侵蚀侵蚀是射流“大直径,小型渗透深度”穿孔的主要原因,这在渗透过程中显示出明显的能量释放特征。以上rawlyStr-Zr基非晶合金衬里和SC的结构设计的一定指导意义。

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