钢化真空玻璃支撑点的排布方式

Support Point Arrangement of Tempered Vacuum Glass

钢化真空玻璃即为两片钢化玻璃间抽真空的结构件。为了保证在外界大气压力下真空层的存在,在两片玻璃之间要放置支撑物。针对钢化真空玻璃中支撑点的排布对玻璃力学特性的重要影响,本文通过建立钢化真空玻璃力学模型,数值分析了不同支撑点排布方式下钢化玻璃的力学性能。研究结果表明:随着支撑间距增大,单位面积支撑点数急剧减少,使钢化玻璃最大变形量和最大应力迅速增大。对于5mm厚的钢化玻璃,在满足力学性能和支撑点数最少的条件下,支撑点正方形排布时支撑点间距可采用8cm,单位面积支撑点数169个;支撑点正三角形排布时,支撑点间距可采用8cm,单位面积支撑点数188个;支撑点正六边形排布时支撑点间距可采用6cm,单位面积支撑点数290个。由此,建议优先采用支撑点间距8cm的正方形排布方式,其次采用支撑点间距为8cm的正三角形排布,此研究对制造钢化真空玻璃中支撑点的排布方式提供理论指导。

Support point arrangement has an important influence on mechanical properties of tempered vacuum glass.In this paper,the mechanical model is established to numerically simulate and analyze the mechanical property of tempered glass with different arrangement of support points.The results show that with the enlargement of support point spacing,the number of supporting points in a unit area decreases sharply,while the deformation strain and the maximum Mises stress of tempered glass both increase rapidly.Under conditions satisfying the mechanical properties and reducing support points,the tempered glass of 5mm thickness may have support point arrangements in the following manners：As the support points are in square pitch arrangement with 8cm spacing,the support points number a square meter is 169;As support points are equilateral triangle arranged with also 8cm spacing,the support point number per square meter is 188;And as for a regular hexagonal arrangement with 6cm spacing,the support point number in a square meter is 290.Thus,the 8cm spacing in the square pitch arrangement of support points shall be firstly preferred,and the 8cm spacing in the equilateral triangle arrangement may be secondly chosen.This study will provide theoretical guidance for the choice of support points arrangement in tempered vacuum glass manufacturing.