Prediction of blast response in laminated glass
Prediction of blast response in laminated glass
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DOI：
10.1016/j.engstruct.2019.01.008
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发表时间：
2019-06
影响因子：
5.5
通讯作者：
M. A. Samieian;D. Cormie;David Smith;W. Wholey;B. Blackman;J. Dear;P. Hooper
中科院分区：
文献类型：
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作者：
M. A. Samieian;D. Cormie;David Smith;W. Wholey;B. Blackman;J. Dear;P. Hooper
夹层玻璃通常用于建筑物中，以防止爆炸载荷。单自由度模型通常被用来设计这种结构，并且今天仍在广泛使用。该单自由度模型包括质量和载荷转换因子，这取决于结构的偏转形状。在这项研究中，有限元模型被用来推导偏转的形状和转换因子。在此分析中考虑了随时间变化的偏转形状历史，因为这目前不包括在其他单自由度模型中。分析是在一系列边界条件和纵横比沿着与不同的加载速率。对于低速率加载，转换因子被发现在偏转的形状-时间的历史过程中没有变化。然而，对于高速率加载，转换因子被发现在偏转形状-时间历史期间变化，因此需要将其包括在thessingle-degree-of-freedom设计方法中。这些转换因子被发现是不敏感的纵横比。
Laminated glass is often used in structures for protection against blast loads. Thesingle-degree-of-freedommodel has conventionally been used to design such structures and it continues to be widely in use today. Thesingle-degree-of-freedommodel includes mass and load transformation factors, which depend on the deflected shape of the structure. In this study, finite element models are used to derive the deflected shapes and transformation factors. The time-varying deflected shape history is taken into account in this analysis, as this is currently not included in othersingle-degree-of-freedommodels. The analysis was conducted on a range of boundary conditions and aspect ratios along with different loading rates. For low-rate loading, the transformation factors were found not to vary during the deflected shape–time history. For high rate loading, however, the transformation factors were found to vary during the deflected shape–time history therefore requiring their inclusion in thesingle-degree-of-freedomdesign methods. These transformation factors were found to be insensitive to aspect ratios.