摘要本文提出了一种多药室高速发射内弹道技术，使得在不提高膛压的基础下增加初速。主要内容有：a）分析发射原理，并针对其三个阶段，建立某双药室坦克炮的经典内弹道模型，并对其进行了数值模拟，讨论分析主副药室的装药比、副药室的点火延迟以及活塞质量等因素对于内弹道性能的影响；b）计算模拟其基于拉格朗日假设下的压力分布，发现主副药室的压力曲线为双峰曲线，副药室能起到良好的接力作用从而达到提高弹丸初速的目的；c）采用多目标优化设计的方法，建立了多药室火炮指标优化模型，并利用TOPSIS方法对其优化问题进行了求解。63563

毕业论文关键词  多药室火炮  模拟  优化

毕业设计说明书（论文）外文摘要

Title     Interior  Ballistics  Simulation  and  Analysis   of  Series  Chamber  Guns                         

Abstract On type of technology of series chamber guns with high speed is proposed which aims to improve the propeller’s kinetic energy through rebuilding the existed guns while not adding the chamber’s pressure. The principle contents are as follows: a）Analysis the theory of the series chamber guns with high speed, aimed at the three different processes ,establish the general 140mm gun's classic interior ballistics model, the numerical simulation results are computed. In addition, some research has been done to analysis the influence of main-deputy powder proportion、ignition delay of deputy powder and plunger mass on interior performance. b）Simulated based on the Lagrange hypothesis, it can be found that the two pressure curves present bimodal curve ,main-deputy chamber plays a good role in relay which achieves the goal to improve the muzzle velocity of the projectile . c）The series chamber gun's optimization model is established by using the multi-object optimization method and the solutions are gotten by TOPSIS method.

Keywords  series chamber  simulation  optimization

1  绪论 1

1.1  课题背景及意义 1

1.2  国内外研究状况 2

1.3  内弹道优化设计 3

1.4  本文主要工作 4

2  多药室高速发射经典内弹道数值模拟 5

2.1  引言 5

2.2  发射原理及物理模型 6

   2.2.1  发射原理图 6

   2.2.2  物理模型 6

2.3  数学模型 7

2.4  数值计算方法 10

   2.4.1  龙格—库塔法 10

   2.4.2  内弹道计算步骤 11

2.5  数值模拟结果与分析 12

2.6 不同因素对多药室高速发射火炮内弹道性能的影响 13

2.7 本章小结 15

3  多药室高速发射火炮基于拉格朗日假设下的压力分布 15

3.1  引言 15

3.2  内弹道气动力简化模型 16

3.3  拉格朗日假设下多药室高速发射火炮弹后空间的压力分布