AUTODYN炸药装药爆炸仿真实验系统设计
关键词 水下爆炸，数值模拟，冲击波压力峰值，网格密度，经验公式，状态方程
毕业论文设计说明书外文摘要
Title EXPLOSIVE explosion simulation system design
Abstract
Uderwater explosion simulation are studied in this paper based on AUTODYN.First, the development of underwater explosions at home and abroad and the research progress were reviewed, and then discussed the part of the theory of the paper and which equations have been used. The main part of the paper,first the effect of the simulation of shock wave peak pressure which observation points bring about had been disccused, an unexpected discovery had been harvest, for this paper, within a certain range of TNT,got a good result on comparing simulation results with empirical values, but the effect of the observation points can not be determined because of lack evidence; The other factor had been disccused is that the effect of shock wave peak pressure which element density bring about ,had found that with the decreasing of the element density, the closer shock wave curve peak pressure approached empirical value. Description heavy element density is not conducive to simulate shock wave curve peak pressure accurately in this simulation.In the end disccused the effect of the simulation results which water EOS bring about, It found that the SHOCK EOS has a great advantage over polynomial EOS.the simulation results arecloser to the empirical value. Through self-programming of vb, using empirical formula to calculate the shock wave impulse explosive underwater explosion, the peak pressure of the bubble and the bubble pulsation cycle maximum radius equivalents. And to achieve access to the run-AUTODYN
Keywords Uderwater explosion ,numerical simulation, shock wave peak pressure, element density, empirical formula, EOS
目 录
1引言 1
1.1 研究意义 1
1.2 水下爆炸概况 1
1.2.1 水下近场爆炸 1
1.2.2 深水爆炸 1
1.3 水下爆炸数值研究概况 2
第一章 水下爆炸相关理论 3
1.1水下爆炸基本现象及特点 3
1.2冲击波及其理论 3
1.2.1水下爆炸冲击波经验公式 4
1.2.2水下爆炸能量输出结构 6
1.2.3冲击波冲量公式 6
1.2.4冲击波能量密度公式 7
1.2.5冲击波能 7
1.2.6空化现象 8
1.3气泡脉动 13
1.3.1气泡现象 13
1.3.2 气泡相关理论和经验公式 14
第二章 数值模拟软件AUTODYN 20