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激光驱动飞片技术作为一项高技术,在基础理论研究和工程实践方面有着广泛的应用。而激光与飞片的能量耦合关系一直是该项技术研究的热点之一。根据激光诱导爆轰波(LSDW)理论,从爆轰波压力的时空分布入手,推导了激光驱动飞片动能耦合效率的数学解析表达式。并以铝飞片为例,重点分析了激光参数(功率密度、脉宽)和飞片结构参数(厚度、直径)与飞片动能耦合效率关系,数值计算结果表明:飞片动能耦合效率与激光脉宽和飞片直径呈递增变化,而与激光功率密度和飞片厚度呈递减变化。
Laser-driven flying-film technology as a high-tech, in the basic theoretical research and engineering practice has a wide range of applications. The energy coupling between laser and flyer has been one of the hot spots in this technology research. According to the laser-induced detonation wave (LSDW) theory, the mathematical analytical expression of laser-driven flying-blade kinetic energy coupling efficiency is derived from the space-time distribution of the detonation pressure. Taking the aluminum flyer as an example, the relationship between laser parameters (power density, pulse width) and flyer structural parameters (thickness and diameter) and the coupling kinetic energy of the flyer is analyzed emphatically. The numerical results show that the coupling efficiency of flyer kinetic energy with the laser Pulse width and flyer diameter showed an increasing change, and laser power density and flyer thickness showed a decreasing change.