FEM Simulation of the Effect of Coefficient of Thermal Expansion and Heat Capacity on Prediction of Residual Stresses of Compression Molded Glass Lenses

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Tao, Bo^1 ; Yuan, Ye^1

Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, Hubei

430081, China^1

关键词: FEM simulations;    Glass lens;    Glass materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012050/pdf
DOI  :  10.1088/1757-899X/269/1/012050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this research, the effects of the coefficient of thermal expansion (CTE) and heat capacity on the prediction of residual stresses in BK7 compression molded glass lenses were studied. Three different groups of CTE and two different kinds of heat capacity, which are constant and proportional to temperature, were chosen to investigate the impacts of residual stresses. The simulation results show a big difference and suggest that the properties of glass materials determine the residual stresses and should be measured carefully.