CAJ | 학술논문

针对透镜退火过程中玻璃具有的结构松弛现象，对玻璃退火结构松弛理论进行详细介绍。采用高级非线性有限元程序MSC. MARC，基于Narayanaswamy结构松弛模型对非球面透镜的退火过程进行数值仿真，获得了非球面透镜退火过程中体积变化及应力分布情况。最后对退火过程中退火速度的影响进行分析。结果表明，退火速度对透镜体积的影响不大，随着退火速度增加，退火应力不断增加。
침대투경퇴화과정중파리구유적결구송이현상，대파리퇴화결구송이이론진행상세개소。채용고급비선성유한원정서MSC. MARC，기우Narayanaswamy결구송이모형대비구면투경적퇴화과정진행수치방진，획득료비구면투경퇴화과정중체적변화급응력분포정황。최후대퇴화과정중퇴화속도적영향진행분석。결과표명，퇴화속도대투경체적적영향불대，수착퇴화속도증가，퇴화응력불단증가。
According to the characteristic structural relaxation phenomenon of glass during the annealing stage,the structural relaxation theory explained by Narayanaswamy model was provided . The commercial finite element method (FEM)program MSC MARC was utilized for the analysis of the annealing process of aspheric lenses,and the volume and stress distribution of lenses were obtained. Influence of cooling rate of annealing was analysed. The results show that the cooling rate of annealing has little effect on the lenses volume,but the annealing stress increases continuously with the cooling rate increasing.