论文部分内容阅读
为了研究战斗部侵彻过程中弹体内缓冲层对冲击应力的缓冲性能,采用动力学计算软件AUTODYN程序对不同材料的缓冲特性进行了数值模拟。结果表明:缓冲层的厚度影响其缓冲效果。厚度为1cm时,缓冲材料的缓冲能力顺序为:尼龙>聚四氟乙烯>铝合金1100>纯铝>有机玻璃>聚氨酯。厚度为3cm时,缓冲能力顺序为:铝合金1100>聚四氟乙烯>尼龙>纯铝>聚氨酯>有机玻璃;缓冲层的缓冲作用主要用于对应力波峰值压力的削弱,最为理想的缓冲材料应对应力波的弥散效应显著。
In order to study the cushioning performance of the buffer layer on the impact stress of the projectile during the warhead penetration, the dynamic characteristics of the cushioning materials of different materials were numerically simulated by AUTODYN program. The results show that the thickness of buffer layer affects its buffering effect. When the thickness is 1cm, the cushioning ability of the cushioning material is orderly: nylon> PTFE> aluminum alloy 1100> pure aluminum> plexiglass> polyurethane. Thickness of 3cm, the buffer capacity of the order: aluminum alloy 1100> PTFE> Nylon> pure aluminum> polyurethane> plexiglass; buffer layer cushioning effect is mainly used to weaken the stress wave peak pressure, the most ideal cushioning material Response to the dispersion effect of stress waves significantly.