药型罩锥角对射孔枪射流冲击过程的影响  

Effect of liner cone angle on perforation and impact process of perforating guns

作　　者：金玮玮[1] 张昭[1] 张洪武[1] 

机构地区：[1]大连理工大学运载工程与力学学部工程力学系工业装备结构分析国家重点实验室,大连116024

出　　处：《计算力学学报》2011年第B04期43-48,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(10802017);国家973计划项目(2010CB832704)资助

摘　　要：采用ALE方法对射孔弹射流形成的过程及聚能射流对混凝土靶板的侵彻进行了数值模拟,对比了锥形药型罩的不同锥角对聚能射流形成和侵彻的影响。研究结果表明药型罩的锥角大小对聚能射流的速度和形状、射流头部和杵体的质量、侵彻的宽度和深度有着明显显著的影响。小锥角射流头部比重较小且杵体速度未达到侵彻临界值而无法起到很好的侵彻效果,大锥角在侵彻过程中可形成大口径的孔洞,但侵彻的深度不够,中锥角在侵彻孔径方面虽不及大锥角,但其侵彻的深度却相对较高。ALE methods were used to simulate the forming process of the shaped charge jet for perforating bullet and the penetration of the jet on concrete plate. Different cone angles were compared to study the effects on the formation and penetration of the shaped charge jet. Results indicated that cone angle plays a key role on the velocities and the shapes of the jet, the quality of jet head and pestle body and the penetration of width and depth. For smaller cone angle, the penetration is not good enough because the jet head is small and the velocity of the jet body is not high enough. For bigger cone angle, the diameter of the penetration hole becomes increased and the penetration depth is insufficient. For middle cone angle, the penetration depth is relatively higher although the diameter of the penetration hole is smaller.

关 键 词：ALE方法 油井射孔 侵彻 药型罩锥角 聚能射流 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]