低速冲击下PVB夹层玻璃的破坏模式试验研究

发布时间：2018-06-30 09:26

本文选题：爆炸力学 + 夹层玻璃　；参考：《兵工学报》2017年S1期

【摘要】：通过落锤试验,得到不同冲击能量下夹层玻璃的破坏模式,同时得到夹层玻璃在集中载荷冲击下的冲击力时程曲线和位移时程曲线,进而分析玻璃厚度以及聚乙烯醇缩丁醛(PVB)夹层厚度对夹层玻璃抗冲击性能的影响。试验结果表明:增加玻璃厚度或增加PVB夹层厚度都能减小夹层玻璃的位移,但二者机理不同;对于玻璃厚度相同而PVB夹层厚度不同的夹层玻璃,达到同一破坏模式所需冲击能量大致相同,PVB夹层越厚,在相同冲击能量下的冲击力越小,PVB夹层厚度的增加能吸收更多的冲击能量;对于PVB夹层厚度相同而玻璃厚度不同的夹层玻璃,玻璃厚度越大则夹层玻璃的刚度和承载力越大,在相同冲击能量下的冲击力也越大。
[Abstract]:Through the drop weight test, the failure mode of laminated glass under different impact energy is obtained. At the same time, the impact time history curve and displacement time history curve of laminated glass under concentrated load impact are obtained. The effects of glass thickness and polyvinyl butyral (PVB) sandwich thickness on impact resistance of laminated glass were analyzed. The experimental results show that the displacement of laminated glass can be reduced by increasing glass thickness or increasing PVB sandwich thickness, but the two mechanisms are different, for laminated glass with the same glass thickness and different PVB sandwich thickness, The impact energy required to achieve the same failure mode is about the same as the thickness of PVB intercalation, and the smaller the impact force is under the same impact energy, the more shock energy can be absorbed by increasing the thickness of PVB interlayer. For the laminated glass with the same PVB sandwich thickness and different glass thickness, the greater the stiffness and bearing capacity of the laminated glass, and the greater the impact force under the same impact energy.
【作者单位】：华南理工大学土木与交通学院;
【基金】：国家自然科学基金项目(11372113)
【分类号】：TQ171.727

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