Paper Title:

Deflection and Stress Analysis of Glass Plate in Elastic Deformation Processing

Periodical Applied Mechanics and Materials (Volumes 37 - 38)
Main Theme Advances in Engineering Design and Optimization
Edited by Yi-Min Deng, Aibing Yu, Weihua Li and Di Zheng
Pages 288-293
DOI 10.4028/www.scientific.net/AMM.37-38.288
Citation Duc Nam Nguyen et al., 2010, Applied Mechanics and Materials, 37-38, 288
Online since November, 2010
Authors Duc Nam Nguyen, Ju Long Yuan, Bing Hai Lv, Zhe Wu
Keywords Aspherical Surface, BK7 Glass, Elastic Deformation
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As the consumer market in the optics, electronics and aerospace industries grows, the demand of ultra-precision aspheric surface increases. The shape accuracy of the optical lens changes significantly with deformation conditions and optical properties of the lens varies with stress distribution within the lens. Therefore, determining the deflection and stress of glass lens is very important to improve the quality of the lens. In this paper, the deflection and stress theoretical results of BK7 glass plate have been presented in different cases of elastic deformation processing. The results are compared with the finite element analysis (FEA) to demonstrate the robustness and accuracy of algorithm in calculation of stress and deflection. The mentioned finite element models were established using the software Abaqus/CAE. The analytical and FEA results showed that if the edge of plate is simply supported, the maximum deflection is 4 times larger than in the fixed edge case. Otherwise if the edge and centre point of plate is simply supported, the maximum deflection is 2.5 times lower than in the fixed edge case and 11.3 times lower than in the simply supported at edge case.

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