为探索不同温度下 B炸药易损性的响应特性，评价穿透深度和环境温度对 B炸药响应程度的影响，用12．7 mm 穿甲燃烧弹以850 m＆#183;s-1速度侵彻了 B炸药。研究了-40，25，70℃温度下 B 炸药的响应特性。用非线性有限元软件 ANSYS/LS-DYN...为探索不同温度下 B炸药易损性的响应特性，评价穿透深度和环境温度对 B炸药响应程度的影响，用12．7 mm 穿甲燃烧弹以850 m＆#183;s-1速度侵彻了 B炸药。研究了-40，25，70℃温度下 B 炸药的响应特性。用非线性有限元软件 ANSYS/LS-DYNA模拟了弹丸侵彻过程，研究了 B 炸药力学性能对易损性的影响。结果表明：在25℃条件下，B 炸药极限侵彻深度为200～250 mm。B炸药在-40，25，70℃条件下最高反应级别分别为爆燃、爆炸、爆燃反应。高温、低温环境抑制了B炸药对弹丸侵彻的反应程度。装药剪切模量下降可使 B炸药响应程度降低。展开更多
PIT tests are usually performed when a mass distribution of High Explosive(H.E) projectile fragments is required. This paper shows the underwater detonation effects of 60 mm, M90 H.E. mortar bomb filled with Comp. B o...PIT tests are usually performed when a mass distribution of High Explosive(H.E) projectile fragments is required. This paper shows the underwater detonation effects of 60 mm, M90 H.E. mortar bomb filled with Comp. B on cylindrical concrete structure(concrete pipe closed at one end-similar to a PIT test)which is 2 m high(inner height) with inner diameter of also 2 m. Thickness of both wall and bottom of a pipe is 0.35 m. Detailed characteristics of concrete which is used for manufacturing of a pipe are specified. Mortar bomb is submerged directly in to the water(no free airspace around the bomb) with the nose pointing to the bottom of a pipe. Number and mass of fragments after detonation are presented by table and photographs. Fragments of dummy fuze, through which blasting cap was protruded, are collected and reassembled to form a shape of a fuze after detonation where expanding of fuze material due to a detonation products is visualized. After underwater detonation, detonation of the same mortar bomb is performed in an empty pipe and the effects of this kind of detonation are observed. Distance at which fragments generated from submerged mortar bomb will not reach concrete pipes wall is also determined.展开更多
文摘为探索不同温度下 B炸药易损性的响应特性，评价穿透深度和环境温度对 B炸药响应程度的影响，用12．7 mm 穿甲燃烧弹以850 m＆#183;s-1速度侵彻了 B炸药。研究了-40，25，70℃温度下 B 炸药的响应特性。用非线性有限元软件 ANSYS/LS-DYNA模拟了弹丸侵彻过程，研究了 B 炸药力学性能对易损性的影响。结果表明：在25℃条件下，B 炸药极限侵彻深度为200～250 mm。B炸药在-40，25，70℃条件下最高反应级别分别为爆燃、爆炸、爆燃反应。高温、低温环境抑制了B炸药对弹丸侵彻的反应程度。装药剪切模量下降可使 B炸药响应程度降低。
文摘PIT tests are usually performed when a mass distribution of High Explosive(H.E) projectile fragments is required. This paper shows the underwater detonation effects of 60 mm, M90 H.E. mortar bomb filled with Comp. B on cylindrical concrete structure(concrete pipe closed at one end-similar to a PIT test)which is 2 m high(inner height) with inner diameter of also 2 m. Thickness of both wall and bottom of a pipe is 0.35 m. Detailed characteristics of concrete which is used for manufacturing of a pipe are specified. Mortar bomb is submerged directly in to the water(no free airspace around the bomb) with the nose pointing to the bottom of a pipe. Number and mass of fragments after detonation are presented by table and photographs. Fragments of dummy fuze, through which blasting cap was protruded, are collected and reassembled to form a shape of a fuze after detonation where expanding of fuze material due to a detonation products is visualized. After underwater detonation, detonation of the same mortar bomb is performed in an empty pipe and the effects of this kind of detonation are observed. Distance at which fragments generated from submerged mortar bomb will not reach concrete pipes wall is also determined.
