强爆炸光辐射作用下材料的能量耦合特性  

Energy coupling characteristic of materials under thermal radiation produced by strong explosion

作　　者：高银军[1,3] 高丽红[1,2] 张相华[3] 马壮[1,2] 刘峰[3,4] 彭国良 田宙[3] GAO Yin-jun;GAO Li-hong;ZHANG Xiang-hua;MA Zhuang;LIU Feng;PENG Guo-liang;TIAN Zhou(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;National Key of Laboratory of Science and Technology on Materials under Shock and Impact,Beijing 100081,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China;State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]北京理工大学冲击环境材料技术重点实验室,北京100081 [3]西北核技术研究院,陕西西安710024 [4]西北核技术研究院激光与物质相互作用国家重点实验室,陕西西安710024

出　　处：《中国光学》2020年第6期1267-1275,共9页Chinese Optics

基　　金：国家自然科学基金资助项目(No.51772027,No.91330205)。

摘　　要：为了获取强爆炸光辐射作用下材料的能量耦合特性,发展了强爆炸辐射源参数以及光辐射传输的物理模型和计算方法,计算给出了不同条件下目标位置处的光辐射谱特征。利用材料光谱反射率测量方法,结合光辐射耦合系数计算方法获取了几类材料的能量耦合系数。结果显示:金属、陶瓷材料的光辐射耦合系数相对较小,而碳纤维环氧复合材料的耦合系数可达0.92;采用实际光辐射能谱计算的耦合系数比近似6000 K黑体谱的结果要高,最大约14%。以铝材料为例,光辐射耦合系数随当量及爆心距离增加均表现出逐渐减小的趋势,但总体变化幅度不大。To obtain the energy coupling characteristic of materials under strong explosive thermal radiation,a physical model for calculating radiation source parameters and atmospheric transmission is constructed,and the characteristics of the radiation spectrum at the target location under different conditions are obtained.The energy coupling coefficients of several kinds of materials are produced by spectral reflectance measurement and by calculating the average absorption coefficient of thermal radiation.The coupling coefficients of metal and ceramic materials are relatively small while it can be as high as 0.92 for carbon fiber epoxy composites.The coupling coefficient calculated from the actual thermal radiation spectrum is higher than that calculated from 6000 K blackbody radiation spectrum,and the maximum difference is about 14%.Taking aluminum material as an example,the coupling coefficient of thermal radiation decreases gradually with the increase of explosion yield and distance,but the overall variation is small.

关 键 词：强爆炸 光辐射 谱分布 能量耦合特性 

分 类 号：O432.1[机械工程—光学工程] O381[理学—光学]