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《Opto-Electronic Engineering》 2010-10
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Stress Analysis of Compression Molding of Aspherical Glass Lenses Using Finite Element Method

YIN Shao-hui,JIN Song,ZHU Ke-jun,CHEN Feng-jun,YU Jian-wu ( National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China )  
Accurate data of the internal residual stress can not be obtained in the process of compression molding of aspherical glass lenses, so finite element method was presented to analyze inner stresshistory and predict residual stress distribution. According to the nature of glass at high temperatures which is similar to viscoelastic material, the creep response of 5-pairs general Maxwell model is incorporated into the finite element numerical calculation. Using advanced nonlinear finite element program of MSC.Marc, uniaxial compression of cylindrical glass and compression molding of aspherical glass lenses were simulated. Residual stress distribution in lenses compressed is obtained. On the basis of above mentioned, the effect of temperature and molding velocity on residual stress distribution in lenses was importantly analyzed. The experimental result shows that maximum residual stress occurs at the edge of the lens, and lower temperature and higher molding speed will increase the maximum residual stress.
【Fund】: 国家重点科技支撑计划基金资助项目(2007BAF29B03);; 国家自科基金中澳合作基金资助项目(50811120105)
【CateGory Index】: TH74
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Chinese Journal Full-text Database 1 Hits
1 GENG Tie1,2, LI De- qun1, ZHOU Hua- min1, SHAO Yu- jie2(1State Key Lab. of Mold & Die Technology, Huazhong University of Science and Technology,Wuhan 430074,China) (2Research and Development Center, AnCai Hi- Tech Co.Ltd,Anyang 455000,China);On the research of numerical simulation technology of glass forming processes[J];Machinery Design & Manufacture;2006-04
Chinese Journal Full-text Database 10 Hits
1 XIA Guo-hua1,ZHU Jin-jie2,TONG Shu-ting1(1.School of Materials Science and Engineering,Tongji University,Shanghai 200092,China;2.Shanghai Yaohua-Pilkington Glass Co.,Ltd,Shanghai 201315,China);Finite-Elemet Simulation in the Thermal Tempering of Glass Plate[J];Glass & Enamel;2008-05
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