NUMERICAL PREDICTION OF PROCESS-INDUCED RESIDUAL STRESSES IN GLASS BULB PANEL

• Published in: Applied mathematics and mechanics Vol. 27; no. 9; pp. 1197 - 1206
• Main Author: 周华民 孙强 奚国栋 李德群
• Format: Journal Article
• Language: English
• Published: State Key Lab of Plastic Forming Simulation and Mold and Die Technology,Huazhong University of Science and Technology, Wuhan 430074, P. R. China 01.09.2006
• Subjects: Bulbs; Computer simulation; Construction; Glass; Mathematical models; Panels; Residual stress; Solidification; 数字模拟模型; 数字预测; 残留压力; numerical prediction; pressing; glass bulb; residual stresses
• ISSN: 0253-4827; 1573-2754
• DOI: 10.1007/s10483-006-0906-z

A numerical simulation model for predicting residual stresses which arise during the solidification process of pressed glass bulb panel was developed. The solidification of a molten layer of glass between cooled parallel plates was used to model the mechanics of the buildup of residual stresses in the forming process. A thermorheologically simple thermoviscoelastic model was assumed for the material. The finite element method employed was based on the theory of shells as an assembly of flat elements. This approach calculates residual stresses layer by layer like a truly three-dimensional calculation, which is well suited for thin pressed products of complex shape. An experimental comparison was employed to verify the proposed models and methods.