CAJ | 학술논문

采用ANSYS/LS-DYNA有限元计算程序模拟设计了药片剪切试验装置，研究了Φ20 mm ×5 mm和Φ20 mm ×9 mm两种厚度的PBX-2药片在剪切试验中的响应特性。采用锰铜压力计测试样品中压力的变化过程，通过高速录像照片分析了撞击点火反应过程，用冲击波超压传感器测量了炸药的反应超压，综合分析了PBX-2炸药在药片剪切试验中的响应规律。结果初步表明，药片剪切试验中PBX-2炸药厚度由5 mm变化至9 mm，其反应落高阈值由3．5～3．7 m降低为3．0～3．1 m，即随着该炸药厚度增加，其反应落高阈值略有降低。
채용ANSYS/LS-DYNA유한원계산정서모의설계료약편전절시험장치，연구료Φ20 mm ×5 mm화Φ20 mm ×9 mm량충후도적PBX-2약편재전절시험중적향응특성。채용맹동압력계측시양품중압력적변화과정，통과고속록상조편분석료당격점화반응과정，용충격파초압전감기측량료작약적반응초압，종합분석료PBX-2작약재약편전절시험중적향응규률。결과초보표명，약편전절시험중PBX-2작약후도유5 mm변화지9 mm，기반응락고역치유3．5～3．7 m강저위3．0～3．1 m，즉수착해작약후도증가，기반응락고역치략유강저。
The shear device for explosive tablet was designed by ANSYS/LS-DYNA and the response character was studied usingΦ20 mm ×5 mm andΦ20 mm ×9 mm PBX-2.The pressure change was measured by Manganin pressure gauges.Ignition process was analyzed by high-speed motion pictures.The reaction overpressure of explosive was gained by blast pressure gauges.Results preliminary show that height threshold decreases from 3.5~3.7 m to 3.0~3.1 m with explosive thickness increasing.The height threshold decreases when increasing explosive thickness in shear test for explosive tablet.