射弹冲击下带预裂槽金属靶的防护性能研究（英文）

发布时间：2018-05-15 10:04

本文选题：刻槽金属靶 + 防护性能　；参考：《高压物理学报》2017年02期

【摘要】：采用弹道实验和数值模拟的方法研究了带环形预裂槽的金属靶在射弹冲击下的毁伤模式和防护性能,分析了弹头形状、预裂槽直径及深度等因素对靶板防护性能的影响。结果表明:对带有环形预裂槽的金属靶板,存在两种主要毁伤模式,即环形槽内部的侵彻和环形槽底的冲击断裂;临界毁伤速度与毁伤模式密切相关,随着环形槽深度的增大或半径的变小,临界毁伤速度变小;与尖头弹相比,平头弹的临界毁伤速度更小;微观分析表明,在射弹冲击作用下,环形槽底部产生绝热剪切带,更容易形成充塞剪切破坏。
[Abstract]:The damage mode and protective performance of metal target with annular presplitting groove under projectile impact were studied by ballistic test and numerical simulation. The effects of warhead shape, diameter and depth of presplitting groove on the protective performance of target plate were analyzed. The results show that there are two main damage modes for metal target plate with annular presplitting groove, that is, the penetration inside the annular groove and the impact fracture at the bottom of the annular groove, and the critical damage velocity is closely related to the damage mode. With the increase of the depth or radius of the annular groove, the critical damage velocity becomes smaller; the critical damage velocity of the flattened projectile is smaller than that of the pointed projectile; the microcosmic analysis shows that the adiabatic shear zone is produced at the bottom of the annular groove under the impact of projectile. It is easier to form packed shear failure.
【作者单位】：南京理工大学瞬态物理重点实验室;江南工业集团有限公司;晋西工业集团有限公司;
【基金】：National Natural Science Foundation of China(11272158,11672138) Foundation of Science and Technology on Transient Physics Laboratory(9140C300405150C30005)
【分类号】：O315

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