-
摘要: 对聚酯材料在电子束辐照下的动力学效应进行了研究。采用Monte Carlo方法,计算了脉冲电子束在聚酯材料中的能量沉积;采用流体动力学方法,对聚酯材料在电子束辐照下的热击波和喷射冲量进行了数值模拟;采用将喷射冲量和热击波压力的数值结果与实验测量结果进行逼近的方法,得到了聚酯材料的升华能约为1.1 kJ/g,Grneisen系数的常态值约为0.2。Abstract: The dynamics effect of polyester under electron beam radiation is studied. The energy deposition of electron beam in polyester is calculated by Monte Carlo methods. The thermal shock wave propagation and the blow off impulse of polyester are simulated by the hydrodynamic method. From the comparison between simulation and experimental results of blow off impulse and peak pressure of thermal shock, the obtained cohesive energy of polyester is about 1.1 kJ/g, and the value of Grneisen parmeter at standard state is about 0.2.
-
Key words:
- pulsed electron beam /
- thermal shock wave /
- blow off impulse /
- polyester /
- equation of state
-
Tang W H, Zhang R Q. Numerical Research on the Destructibility of Pulsed Electron Beam to Materials [J]. High Power Laser and Particle Beams, 1997, 9(4): 617-622. (in Chinese) 汤文辉, 张若棋. 脉冲电子束对材料破坏效应的数值研究 [J]. 强激光与粒子束, 1997, 9(4): 617-622. Zhao G M, Zhang R Q, Tang W H. The Blow off Impulse on Material due to Pulsed X-Ray Radiation [J]. Explosion and Shock Wave, 1996, 16(3): 259-265. (in Chinese) 赵国民, 张若棋, 汤文辉. 脉冲X射线辐照材料引起的汽化反冲冲量 [J]. 爆炸与冲击, 1996, 16(3): 259-265. Tang W H, Zhang R Q. Introduction to Theory and Computation of Equation of State [M]. 2nd ed. Beijing: Higher Education Press, 2008. (in Chinese) 汤文辉, 张若棋. 物态方程理论及计算概论 [M]. 第2版. 北京: 高等教育出版社, 2008. Ran X W, Tang W H. New Method for Calculating Cold Energy, Cold Pressure and Cohesive Energy of Solids [J]. Chinese Journal of High Pressure Physics, 2003, 17(1): 50-55. (in Chinese) 冉宪文, 汤文辉. 一种计算固体冷能、冷压和结合能的新方法 [J]. 高压物理学报, 2003, 17(1): 50-55. Zhao G M. Investigations of Simulation Techniques for Studying Structural Response of Cylindrical Shells under Powerful Pulsed X-Ray Radiation [D]. Changsha: Graduate School of National University of Defense Technology, 1997. (in Chinese) 赵国民. 强脉冲X射线辐照下圆柱壳体结构响应的模拟技术研究 [D]. 长沙: 国防科技大学研究生院, 1997.
点击查看大图
计量
- 文章访问数: 7461
- HTML全文浏览量: 314
- PDF下载量: 647