Modeling and simulation of residual stresses during glass bulb pressing process

作者：Zhou HuaMin^*; Xi GuoDong; Li DeQun

来源：Science in China - Series E: Technological Sciences , 2007, 50(1): 103-117.

DOI：10.1007/s11431-007-2033-6

• glass bulb
• residual stresses
• mathematical modeling
• numerical simulation
• theory of thin layers

The residual stresses accumulated in the forming process have great effects on the product quality of the glass bulb. Based on the characteristics analysis of glass bulb forming, a mathematical model has been established for calculating residual stresses of glass pressing process. The material is assumed as thermorheologically simple thermoviscoelastic material, and the flow-induced stress is neglected. The consequences of equilibrium and compatibility equations are discussed in detail, and the boundary conditions are specified for various stages of the forming process. The numerical solution is based on the theory of thin layers, combined with finite difference method in the time and layer difference in the thickness direction. The presented model and solution method could easily be extended to general pressing process of glass, and applied to problems relative to glass pressing, providing extensive reference values.

• 出版日期2007-2
• 单位华中科技大学