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为确定PELE的壳体材料和内芯材料对侵彻后效的影响因素,在30 mm弹道炮上发射不同材料的钢壳体和惰性内芯材料组成的PELE对固定靶板进行撞击实验.实验结果表明:实验速度范围内,提高着速能够增大破片的数量和飞散角,破片飞散角比破片数量对着速更“敏感”;钢壳体的屈服强度越大或剪切模量越小,PELE的侵彻后效越好;内芯材料的剪切模量是侵彻后效的主要影响因素之一,而不是密度;实验中的最佳匹配关系是壳体为D 60、内芯为PE.这些结论为小口径PELE的设计和应用提供了重要依据.
In order to determine the influence factors of PELE shell material and core material on penetration succession, a PELE consisting of a steel shell of different materials and an inert core material was fired on a 30 mm ballistic gun to impact the fixed target plate. The results show that: in the experimental speed range, increasing the speed can increase the number of fragments and the scattering angle, the scattering angle of the fragments is more sensitive than the number of fragments to the holding speed; the greater the yield strength of the steel shell or the shear modulus The smaller the penetration of PELE is, the better the penetration efficiency of PELE is. The shear modulus of the core material is one of the main factors affecting the penetration efficiency, not the density. The best matching relationship in the experiment is that the shell is D 60, The inner core is PE. These conclusions provide an important basis for the design and application of small diameter PELE.