支撑柱对真空平板玻璃静态特性的影响  

Effect of Shore on Static Characteristics of Vacuum Plate Glass

作　　者：缪宏[1] 张瑞宏[1] 左敦稳[2] 王洪亮[1] 王海耀[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225000 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《建筑材料学报》2013年第1期153-158,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51172199);江苏省自然科学基金资助项目(BK2012530);江苏省产学研联合创新资金资助项目(SBY201120191);江苏省科技支撑(社会发展)项目(BE2010700);江苏省普通高校研究生科研创新计划项目(CXLX11_1002)

摘　　要：根据弹性力学、板壳理论,用数学微分法建立了真空平板玻璃在静态载荷下表面的挠度和应力分布模型,通过对真空平板玻璃静态特性的试验研究,分析了真空平板玻璃表面挠度和应力分布的规律,并验证了数值计算结果的可靠性.结果表明:静态载荷下真空平板玻璃中心处表面应力与挠度最大,随着离真空平板玻璃中心处距离的增加,应力与挠度呈减小趋势;相同静态载荷下,支撑柱分布间距与直径对真空平板玻璃表面应力分布的影响较为明显,而支撑柱高度对真空平板玻璃表面应力分布的影响不大.当支撑柱直径为0.2mm,分布间距为40mm,静态载荷超过15kg时,静态载荷接近真空平板玻璃的许容应力,若超过这一范围,真空平板玻璃易出现破碎,这为优选支撑柱分布与尺寸参数提供了新的依据.Based on elastic mechanics, plate theory and calculus, the models of deflection and stress distri- bution of the vacuum plate glass surface under static load were built. The static characteristic of the vacu- um plate glass was studied through experiments. The deflection and stress distribution of the vacuum plate glass on the surface were analyzed. And the reliability of calculation results was verified. The results show that the deflection and stress value at the center of the vacuum plate glass under static load are maximum. With the increase of the distance from the center of the vacuum plate glass, the deflection and stress value tend to reduce. The effect of the distance between two shores and the diameter of the shore on the stress distribution of the vacuum plate glass surface is significant under the same static load, and the effect of the height of the shore has little influence. The experimental results show that the static load is close to allow- able stress of the vacuum plate glass. When the diameter of the shore is 0.2 mm, the distance between two shores is 40 mm and the static load is 15 kg. If surpassing this range, the vacuum plate glass is vulnerable to break. A new basis for optimizing shore＇s distribution and dimension to obtain ideal processing technol- ogy of the vacuum plate glass is provided.

关 键 词：真空平板玻璃 支撑柱 静态特性 应力 挠度 

分 类 号：TQ171.727[化学工程—玻璃工业]