Response of laminated architectural glazing subjected to blast loading
Response of laminated architectural glazing subjected to blast loading
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DOI：
10.1016/j.ijimpeng.2005.05.012
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发表时间：
2006-12
影响因子：
5.1
通讯作者：
Jun Wei;L. Dharani
中科院分区：
文献类型：
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作者：
Jun Wei;L. Dharani
针对模拟爆炸载荷下的矩形夹层建筑玻璃，提出了基于经典小挠度和大挠度板理论的解决方案。分析模型的结果与三维非线性动态有限元分析进行了比较。最近的大多数研究都强调在确定结构响应时爆炸荷载正相的影响。这项研究表明，对于某些夹层玻璃面板配置，爆炸载荷的负相位对动态响应有显着影响。特别是，负压引起的跨中面板挠度和最大拉应力几乎是正爆炸加载阶段相应量的两倍。这意味着，如果玻璃在正载荷持续时间内没有失效，那么它可能会在负载荷阶段失效，因为该阶段的动态应力较高。
Solutions based on the classical small deflection and large deflection plate theories are presented for a rectangular laminated architectural glazing subjected simulated blast loading. The results of the analytical models are compared with a three-dimensional nonlinear dynamic finite element analysis. Most of the recent studies have emphasized the effect of the positive phase of blast loading while determining the structural response. This study shows that for certain laminated glass panel configurations, the negative phase of a blast loading has a significant effect on the dynamic response. In particular, mid-span panel deflection and maximum tensile stress due to negative pressure are almost double the corresponding quantities due to positive blast loading phase. This means that if the glazing does not fail in the positive loading duration, it may do so in the negative loading phase because of higher dynamic stresses during this later phase.