粉末药型罩石油射孔弹侵彻性能的数值模拟  

THE NUMERICAL SIMULATION ON PENETRATING PERFORMANCE OF POWDERED LINER IN PERFORATION OF OIL

作　　者：吕愿宏 王续跃[1] 李晓杰[2] 王连吉[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]大连理工大学工程力学系,辽宁大连116024

出　　处：《工程爆破》2015年第2期1-4,共4页Engineering Blasting

基　　金：国家自然科学基金项目(11272081;51321004)

摘　　要：根据石油射孔弹的实际结构和几何尺寸,运用ANSYS/LS-DYNA2D非线性动力学有限元分析软件,基于自适应网格方法,对孔隙率为11.53%的铜药型罩射流形成和打靶过程以及聚能射流头部速度进行详细描述和分析,并对密实铜药型罩射流形成及打靶的过程进行了数值模拟。对比分析粉末药型罩和密实药型罩侵彻靶板的形貌,结果表明:孔隙率为11.53%的药型罩打靶在穿深、孔径两方面均表现出了更好的侵彻特性。According to actual structure and geometry size of oilwell perforator, a detailed description and analysis on formation, penetration, tip velocity of copper liner with 11.53% porosity jet was taken by adaptive mesh method, using nonlinear dynamics finite element software ANSYS/LS-DYNA-2D. At the temporal point of view, the characteristics of shaped charge jet formation, penetration depth and tip veloci- ty of porous copper liner were studied in detail with numerical methods. The formation and penetrating processes of solid copper liner jet were numerical simulated comparatively. It was demonstrated by the re- sults of target feature between porous and solid liner that copper liner with 11.53~ porosity showed better penetrating ability than solid liner in both penetration depth and crater diameter. Calculations showed that without obvious change of average crater diameter, the target penetration of porous liner was deeper than solid one.

关 键 词：石油射孔弹 粉末药型罩 靶板侵彻 自适应网格 数值模拟 

分 类 号：TE31[石油与天然气工程—油气田开发工程] TP69[自动化与计算机技术—控制理论与控制工程]