Comparison between Initiation Modes for Linear Demolition Shape Charges
Demolition charges have their industrial as well as military uses such as demolition of bridges or breaching of steel structures. For this paper, a prototype demolition charge of throat width 50mm and length 100mm with 90 degree copper sheet liner was developed at State Key Laboratory (SKL) and selected for studies. Commercial copper and comp-B explosive were employed. Simulation and experiments were then performed to find an optimal initiation mode for the charge effectiveness. Two modes of initiation namely center point and side point were tested. Three dimensional computer simulations were first performed and then the model was experimentally tested with both modes of initiation and x-ray radiographs were obtained. Autodyn 3D software was used to perform simulations using Lagrange processor. The simulation and experimental results were then analyzed and compared. A methodology namely angle of impact is being presented which correlates the effectiveness of the mode of initiation with the angle of, impact (which collapsing copper liner makes with the target at various points). Center point initiation mode is found to be more effective than side point based on experimental evidence and supported by angle of impact methodology. Autodyn simulations are in very good agreement with the experimental radiographs.
Demolition charges linear shape charge radiographs penetration Autodyn 3D modes of initiation angle of impact.
SHAKEEL Abbas Rofi(Pakistan) HUANG Fenglei
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
295-300
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）