激光技术2011，Vol.35Issue(2)：285-288,4.DOI:10.3969/j.issn.1001-3806.2011.02.039
表面污染物诱导熔石英损伤的热力学数值模拟
Thermal stress simulation of laser induced damage of fused silica by contamination on the surface
摘要
Abstract
In order to study the laser-induced damage mechanism in inertial confinement fusion system, temperature and thermal stress distributions in the fused silica, heated by repetition frequency laser, were given by means of finite element methods. The simulated results indicate the temperature of the contaminations rise to 2800K during the pulse laser irradiation, but the fused silica' s temperature mainly rise from 300K to 2200K in 100μs after irradiation, and damage induced by the thermal stress occurs. The strong compressive in the damage region is about 30. 73MPa. The highest stress outside the damage region is deviatoric hoop stress. The damage morphologies were tested by means of optical microscopy. The simulated outcomes correspond to the experiment result.关键词
激光技术/熔石英/损伤形貌/热应力/有限元法/污染物Key words
laser technique/fused silica/ damage morphologies/ thermal stress/ finite element method/ contamination分类
信息技术与安全科学引用本文复制引用
苗心向,袁晓东,程晓锋,贺少勃,郑万国..表面污染物诱导熔石英损伤的热力学数值模拟[J].激光技术,2011,35(2):285-288,4.基金项目
中国工程物理研究院国防预研资助项目 （）
