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采用弹性力学、板壳理论与数学微分法,建立真空平板玻璃在风载荷下表面的挠度变形和应力分布模型,通过对真空平板玻璃风载荷特性的试验研究,得到风载荷下真空平板玻璃在封边处、支撑处与支撑柱之间的连线中点处重要部位的应力分布,分析真空平板玻璃表面挠度变形和应力分布的规律,并验证理论分析方法的有效性与合理性,为真空平板玻璃测试标准中环境参数的制定、使用寿命预测以及结构改进设计提供重要依据。试验结果表明,随着风载荷的增加,真空平板玻璃表面各测点挠度变形和应力呈增加的趋势。在不同风载荷条件下,最大应力发生在距真空平板玻璃中心处最近的支撑处,最大挠度变形在斜线方向两支撑柱的中点,最大应力表现为拉应力最大,而最小应力与最小挠度变形发生在距真空平板玻璃中心处最远的斜向两支撑柱中点,最小应力表现为压应力最大。
By using the theory of elasticity, plate theory and mathematical differentiation, the deflection and stress distribution model of vacuum flat glass under wind load is established. Through the experimental research on the wind load characteristics of vacuum flat glass, the vacuum flat glass under wind load is obtained. Edge, support and support columns at the midpoint of the connection between the stress distribution of the important parts of the analysis of vacuum flat glass surface deflection and stress distribution of the law, and verify the effectiveness of the theoretical analysis and rationality for the vacuum plate Glass testing standards in the formulation of environmental parameters, life prediction and structural design to provide an important basis for improvement. The experimental results show that with the increase of wind load, the deflection and stress at each measuring point on the vacuum flat glass plate tend to increase. Under different wind loads, the maximum stress occurs at the nearest support to the center of the vacuum plate glass. The maximum deflection is at the midpoint of the two support columns in the diagonal direction. The maximum stress is the maximum tensile stress, while the minimum stress and the minimum deflection Deformation occurred in the center of the vacuum plate glass farthest from the midpoint of the two support columns, the minimum stress showed the largest compressive stress.