炸药爆轰状态方程参数的水下爆炸测试方法研究

项目名称： 炸药爆轰状态方程参数的水下爆炸测试方法研究

项目编号： No.11272081

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 李晓杰

作者单位： 大连理工大学

项目金额： 100万元

中文摘要： 针对目前炸药状态方程参数缺乏，状态方程测试方法复杂的问题，本项目拟研究一种适用于大炸药量的爆轰状态方程测试技术。主要是通过测取水下球型炸药的近场冲击波，根据冲击波衰减规律反演出炸药状态方程参数。项目的研究主要包括测试技术、反演理论、误差控制技术与理论分析三个方面。测试技术采用连续电阻丝测试的方法，连续测出水下冲击波的迹线，因此需研究制备连续电阻丝传感元件，采取压致导电涂层的方法解决。对于水下爆炸的反演，研究非均熵流的特征线逆解法，与参数优化方法相结合，由冲击波衰减规律直接反演求解出炸药爆轰压力与状态方程参数。对水介质与炸药声阻抗失配等问题，用辅助测试方法解决，并利用三维有限元和无网格方法计算辅助测试、气-水界面混合等对水下冲击波的影响，从理论上确定误差量级。拟研究的试验方法不仅可以用于炸药状态方程参数测试，同时也是大药量水下爆炸近场冲击波测试的一种补充研究手段。

中文关键词： 炸药状态方程；特征线；水下爆炸；爆轰；水下冲击波

英文摘要： Equation of state (EOS) for explosives is one of basic subjects in explosive mechanics and explosion physics. Currently, test techniques for determining parameters of explosive EOS is very complex, as a result, explosive EOS parameters are very difficult in searches. Therefore, a measurement, based on the underwater explosion of spherical explosives, was proposed to determine EOS parameters of massive charged explosives. The main test process is to measure the path line of near-field shock-wave-front caused by a spherical underwater explosion, and invert the EOS's parameters according to the wave-front trace. There are three main parts in this proposal, including test technique, inversion theory, error theoretical analysis and control technique. First, in order to record the trace of underwater shock-wave-front, a continuous resistance wire sensor need to be used in test. Therefore, the sensor element of continuous resistance wire, worked under high pressure, is one of key techniques. So a pressure-sensitive conductive coating will be selected out and prepared as wirelike sensitive element. The second step is the inversion analysis of underwater explosion. the reverse solution of these characteristic curves of non-isentropic flow (non-uniform-entropy flow) will be deduced, combined with the parameter optimizat

英文关键词： EOS of Explosives；Characteristics；Underwater Explosion；Detonation；Underwater Shock Waves