【摘要】 采用matlab数值模拟了长脉冲激光辐照硅材料的热应力分布,模拟了材料的径向与环向热应力,分析了激光参数与辐照时间对热应力的影响。结果表明:在材料损伤过程中环向应力起主要作用,材料所受到的应力随时间的增加而增大,激光功率密度越大,材料的损伤阈值越小,越容易发生破坏。更多还原

【Abstract】 Thermal stress field on Radial and Circumferential of the long pulse laser irradiating Silicon was simulated by matlab,the effect of stress on laser parameter and irradiating time was analyzed.The results show that the circumferential of thermal stress is in dominant position,Stress is enlarged according to the increase of irradiating time.The laser is damaged easierly with more greater power density and the smaller damage threshold of Silicon.更多还原