摘要为了实现大炸高下进行侵彻毁伤，本文提出某型破甲战斗部结构，该战斗部可形成JPC毁伤元，实现大炸高下侵彻装甲的效果。本文对JPC的成型和断裂进行理论分析，并采用数值仿真手段对影响JPC成型的因素进行分析，利用LS-DYNA研究了药型罩罩高、药型罩曲率半径、罩底厚度、罩顶高度、壳体壁厚、隔板位置、装药长径比和炸高对JPC成型的影响规律，并利用理论与仿真相结合的方法分析了药型罩结构参数与有效炸高的匹配关系。结果表明：对本文研究结构，药型罩罩高、曲率半径和罩顶高度对长径比影响明显，长径比随罩高的增加而增加，随曲率半径和罩顶高度的增加而减少；头部速度受曲率半径和罩顶高度影响显著，头部速度随曲率半径的增加而增加，随罩顶高度的增加而减少；从而确定大炸高条件下破甲战斗部结构参数，壳体壁厚5mm，隔板上表面与壳体内壁距离5mm，药型罩罩高19mm，外曲率半径130mm，内曲率半径115mm，罩底厚度6。15mm，罩顶高度3。2mm，装药直径110mm，装药高度125mm，并通过仿真实验验证了在15。5倍装药直径的炸高条件下JPC仍具有侵彻威力，通过理论分析该成型装药结构的有效炸高可达到20倍装药口径。76666

毕业论文关键词  聚能杆式侵彻体  大炸高  毁伤元成型  数值模拟

毕业设计说明书外文摘要

Title  Implement the Design of penetration Shaped Charge Warhead Under Large Standoff Distance Condition             

Abstract In order to implement penetration and damage under at a large stand-off, this paper advanced a certain type of shaped charge warhead structure, which can form JPC kill element to implement penetration shaped charge warhead under at a large stand-off。 This paper makes a theoretical analysis of the formation and fracture process of JPC, and the formation of JPC are analyzed by means of numerical simulation。 The process of JPC’s formation was simulated using LS-DYNA。 The influence of the liner height, the liner curvature ,the liner bottom thickness, the liner top thickness ,the shell thickness, the block board location , the charge ration of length to diameter and stand-off was analyzed 。And using the method of combining theory and simulation analyses the matching relation between liner structural parameter and effective stand-off 。The results show that the research of this paper structure, the liner height, curvature and top thickness are obvious influence on the length diameter ratio。 Length to diameter ratio increases with the increase of the liner height, with the liner curvature and the top thickness increase and decrease; the head velocity by the liner curvature and the top thickness significant influence height。 Head speed is increased with the increase of the liner curvature, with the increase of the top thickness and reduce。 Determined the structural parameters of shaped charge warhead at a large stand-off, the shell thickness 5mm，the block board location 5mm，the liner height 19mm，extrinsic curvature radius 130mm， inner curvature radius 115mm，the liner bottom thickness 6。15mm，the liner top thickness 3。2mm，the charge radius 55mm，the charge height 125mm,and JPC still with the power to penetrate at 15。5CD’s stand-off by numerical simulation are given。 Through the theoretical analysis of the shaped charge’s effective stand off up to 20CD。

Keywords  JPC  large stand-off  formation of penetrator  numerical simulation

目   次

1  绪论 1

1。1  课题的研究背景及意义 1

1。2  国内外研究现状 2

1。3  本文研究的主要内容和工作 5

2  聚能杆式侵彻体的理论分析 7

2。1  战斗部结构方案设计 7