真空平板玻璃支撑应力实验研究  

Experimental Study on the Braced Stress of the Vacuum Glazing

作　　者：张瑞宏[1] 高建和[1] 顾乡[1] 张华[1] 

机构地区：[1]扬州大学机械工程学院,扬州225009

出　　处：《真空科学与技术学报》2006年第6期455-458,共4页Chinese Journal of Vacuum Science and Technology

基　　金：江苏省"十五"科技攻关项目(No.BE2001414);江苏省研究生创新计划资助项目(No.XM05-32)

摘　　要：用弹性力学的结点法建立真空玻璃支撑应力-应变力学模型,求出真空玻璃的支撑应力-应变场,分析了其应力-应变分布规律,同时用了电测方法进行试验验证。试验结果表明,真空玻璃最大应力发生在四角第二个支撑处,最大应力弹性力学计算值11.057 MPa,电测法的测试值11.765 MPa,两者误差为6.02%。支柱横截面上的正应力为179 MPa,纵向变形为0.2686μm(钢柱),0.7414μm(玻璃柱)。控制支撑高度误差和玻璃的平整度,保证受力的均匀,可增加真空玻璃的强度,增加其可靠性,提高其使用寿命。The braced stress-strain field and its distribution in vacuum glazing have been evaluated with theory of elasticity mechanics and a newly developed model. The calculated results were validated with electrical measurements. The results show that the maximum stress exists at the interfaces of the glass sheer＇and the top and bottom sides of a＇brace;and the calculated and measured maximum stresses are 11.057 MPa and 11.765 MPa, respectively.The discrepancy is less than 6% .The experimental results are shown that high precision of the steel brace height and good flamess of the glass sheet considerably improve the vacuum glazing quality, such as its strength, its dependability and its service life.

关 键 词：真空平板玻璃 支撑 应力场 使用寿命 

分 类 号：TQ171.721[化学工程—玻璃工业] S625.3[化学工程—硅酸盐工业]