【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6 000 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。更多还原

【Abstract】 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 6 000 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.更多还原