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Blast test and numerical simulation of point-supported laminated glass curtain wall

机译:点支撑夹层玻璃幕墙的爆破试验和数值模拟

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To investigate the blast resistance of point-supported laminated glass curtain wall, 9 site blast testswere carried out, considering 2 types of glass thickness and 6 differentTNTcharges from 0.4 kg to 30 kg.The overpressure and displacement were measured and the failure mode was observed. The tests demonstrated that the overpressure suddenly increased and quickly decayed within a few milliseconds; the displacement response of the glass curtain wall increased with the increase in TNT charge and decreases with the increase of the glass thickness; the final failure mode was featured by tearing off of PVB at the support of the laminated glass panel while the glass shards still adhered to the PVB. Nonlinear dynamic finite element simulation agrees well with the results from the blast tests. Severe stress concentration has been predicted at the rim of the support holes and leads to the failure at these supports, and this also agrees with the failure mode observed from the blast test.
机译:为了研究点支撑的叠层玻璃幕墙的抗爆炸,9位点出现测试,考虑到2种类型的玻璃厚度和6种不同的液体,从0.4kg到30kg。测量过压和位移,观察到失效模式。测试表明,过压突然增加,迅速衰减在几毫秒内;玻璃幕墙的位移响应随着TNT充电的增加而增加,随着玻璃厚度的增加而降低;最终的故障模式是通过在夹层玻璃板的支撑时撕下PVB,同时玻璃碎片仍然粘附在PVB上。非线性动态有限元仿真与爆炸测试的结果吻合良好。在支撑孔的边缘上预测了严重的应力浓度,并导致这些支撑件的故障,这也同意从喷砂测试中观察到的失效模式。

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