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高速碰撞过程中应变硬化材料靶动态响应研究

DOI: 10.11858/gywlxb.2003.04.004, PP. 261-267

Keywords: 柱形腔膨胀,应变硬化材料,侵彻,贯穿

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Abstract:

给出了适用于可压缩、弹塑性、按幂次律应变硬化材料的动态柱形腔膨胀模型和侵彻模型,并编制了相应的计算程序。腔膨胀模型给出靶中应力分布情况,侵彻模型根据腔膨胀模型的有关结果来预估具有锥形头部的刚性弹丸侵彻半无限厚靶的最终侵彻深度以及贯穿薄靶时的弹丸剩余速度和弹道极限速度。给出了钨合金弹丸正碰5083-H131铝靶和钢弹丸正碰6061-T651铝靶的一些计算结果,计算结果与实验结果及二维拉氏弹塑性LTZ-2D程序的数值模拟结果符合得很好。

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