聚酯材料在脉冲电子束辐照下的动力学效应与材料参数

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,Grüneisen系数的常态值约为0.2。

The Dynamics Effect and Material Parameters of Polyester Radiated by Electron Beam

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 Grüneisen parmeter at standard state is about 0.2.