AUTODYN温压炸药有限空间内爆炸效应研究

摘要为了掌握温压炸药在有限空间内的爆炸机理和冲击波传播规律，本文采用实验研究和数值模拟相结合的方法对温压炸药的有限空间爆炸效应进行了研究，主要研究在有限空间内爆炸冲击波的传播特性。
本论文使用AUTODYN程序建立2D轴对称模型，计算温压炸药在有限空间爆炸后的后燃特性以及冲击波传播与反射、聚焦等现象，完整再现了温压炸药爆炸后冲击波在有限空间内的传播过程，分析了爆炸冲击波在有限空间内的传播特性，并与实验测量的结果进行对比和分析。结果表明：模拟过程能较为正确的反映出温压炸药在有限空间内的后燃特性、冲击波传播过程；温压炸药爆炸冲击波在空间内传播的特征为冲击波的多次聚焦和反射；通过合理设置网格密度可达到计算效率与准确性的统一；有限空间结构及尺寸的不同、状态方程的变化会导致冲击波的传播过程大不相同。19537
关键词温压装药，有限空间，后燃反应，爆炸效应
毕业论文设计说明书（论文）外文摘要
Title   The explosion effects of thermobaric explosive blast
   in limited space
Abstract
In order to grasp the mechanism of thermobaric explosives in a limited space and the propagation of shock waves.The explosion effects of thermobaric explosive,especially the parameters of the blast wave in a confined space,are studied both experimentally and numerically.
Numerical simulations are accomplished for the propagation, reflection and afterburning effect of thermobaric explsives in confined space by using two-dimensional axisymmetric models.The propagation of shock wave induced by confined space explosion for thermobaric explosives was completely studied with the AUTODYN software. The propagation characteristics of shock wave in the confined space were analyzed and the results indicate that the numerical simulation are in good agreement with the experiment. The computation model is able to present the process of shock wave of thermobaric explosives in confined space. The focus and reflection of shock wave are the characteristics of shock wave generated by thermobaric explosives explosion in confined spaces.Computational efficiency and accuracy can be achieved unity by setting reasonable mesh density.Not only different structure and size of the confined space but also different equations of state can lead to very different shock wave propagation.
Keywords thermobaric explosive，afterburn,limited space，explosion effects
目录
1 绪论   1
1.1 课题研究背景及意义   1
1.1.1 课题研究背景   1
1.1.2 研究意义   2
1.2 国内外研究状况   2
1.2.1 温压技术研究现状   2
1.2.2 有限空间研究现状   3
1.2.3 有限空间数值模拟   4
1.3 本文主要工作   4
2 空气冲击波的传播、反射和聚焦现象   6
2.1 空气冲击波的传播   6
2.2 冲击波的反射与聚焦   6
2.2.1 冲击波的正反射   6
2.2.2 冲击波的斜反射   7
2.2.3 冲击波的聚焦   8
3 温压炸药在有限空间的数值模拟   9
3.1 AUTODYN简介   9
3.2 二次反应理论   9
3.3 数值计算模型及状态方程   10
3.3.1 状态方程的选取   10
    3.3.2 计算模型   11
3.4 计算条件研究   11 AUTODYN温压炸药有限空间内爆炸效应研究:http://www.751com.cn/huaxue/lunwen_10935.html