激光引爆炸药和冲击加载铝板的数值研究

NUMERICAL SIMULATIONS OF LASER IGNITION OF PETN AND INTERACTIONS OF EXPLOSION WAVES WITH Al TARGETS

本文用一维反应流体力学程序SSS模拟研究PETN炸药的激光引爆过程。分别讨论了激光波形、窗口厚度的影响,认为激光功率密度在10~6～10~8W/cm^2时,其引爆机制主要为热机制;炸药受热膨胀是激光能量损耗的主要因素之一。此外,本文还讨论了激光引爆后,爆轰波与铝靶的相互作用。

The Process of high explosive PETN ignited by a laser beam has been simulated with a 1-D code SSS. The effects of the thickness of transparent glass window and the shape of the laser pulse are discussed, respectively. The explosive expansion is one of the most important factors for energy loss during the ignition. The response of the aluminum plate driven by PETN explosive is also discussed.