Parametric study of laminated glass window response to blast loads
Parametric study of laminated glass window response to blast loads
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DOI：
10.1016/j.engstruct.2013.08.007
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发表时间：
2013-11
影响因子：
5.5
通讯作者：
Xihong Zhang;H. Hao;G. Ma
中科院分区：
文献类型：
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作者：
Xihong Zhang;H. Hao;G. Ma
在这项研究中，数值模拟构建的压力脉冲（P-I）图PVB夹层浮法玻璃窗的夹层玻璃窗的动态响应和爆炸载荷之间的相关性。利用LS-DYNA建立了夹层玻璃窗在爆炸荷载作用下的数值模型。PVB和浮法玻璃的动态材料特性被认为是。通过将数值计算结果与文献中的现场爆炸试验结果进行比较，验证了该模型模拟夹层玻璃窗对爆炸荷载响应的准确性。利用所建立的数值模型计算了不同窗参数下夹层玻璃的动力响应。夹层板的失效被用来定义玻璃窗的总失效。参数研究进行检查窗口尺寸，夹层厚度，玻璃厚度和边界条件上的P-I图的影响。根据数值计算结果，导出了预测P-I图的冲量和压力渐近线的经验公式。这些经验公式可直接用于构造评价夹层玻璃窗抗爆炸荷载能力的P-I图。
In this study, numerical simulations are performed to construct the pressure–impulse (P–I) diagrams for PVB laminated float glass windows to provide correlations between dynamic responses of laminated glass window and blast loadings. Numerical model of laminated glass window response to blast loads is developed using LS-DYNA. Dynamic material properties of both the PVB and float glass are considered. The accuracy of the model to simulate laminated glass window response to blast loads is verified by comparing the numerical results with field blast test results available in the literature. Dynamic response of laminated glass with different window parameters are then calculated using the developed numerical model. The failure of interlayer laminate is used to define the total failure of glazing windows. Parametric studies are performed to examine the influence of window dimension, interlayer thickness, glass thickness, and boundary conditions on theP–Idiagrams. The empirical formulae are derived based on numerical results to predict the impulse and pressure asymptote ofP–Idiagrams. These empirical formulae can be straightforwardly used to constructP–Idiagrams for assessment of blast loading resistance capacities of laminated glass windows.