动荷载作用下预测玻璃板破坏强度和破坏时间的一种改进模型——Ⅱ.参数确定及验证

柳锦春;于润清;唐德利

振动与冲击 ›› 2014, Vol. 33 ›› Issue (13) : 82-85.

PDF(1551 KB)
PDF(1551 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (13) : 82-85.
论文

动荷载作用下预测玻璃板破坏强度和破坏时间的一种改进模型——Ⅱ.参数确定及验证

  • 柳锦春,于润清,唐德利
作者信息 +

An Improved Prediction Model of Failure Strength and Failure Time of Glass Panels under Dynmaic Loading —— II. Parameter Determination and Verification

  • LIU Jin-chun, YU Run-qing, TANG De-li
Author information +
文章历史 +

摘要

对浮法玻璃,确定了文献[1]中修正的单层玻璃板动态裂纹破坏模型的未知参量。先假定了玻璃板中的裂纹长度服从四种分布,将四种分布与不同的裂纹密度和裂纹最大长度组合模拟玻璃的破坏时间,通过与试验的对比得出四种分布对应的最优裂纹密度和最大裂纹长度;运用四种分布及对应的裂纹密度和最大裂纹长度,计算了玻璃板的破坏应力,经过与试验对比确定出裂纹长度分布。用确定参数后的模型预测了玻璃板的破坏应力和破坏时间,并将改进模型的计算结果与试验值和已有模型的计算结果进行了对比分析,对比表明改进模型能较准确地预测破坏应力和破坏时间。最后用确定的参量模拟了爆炸荷载下玻璃板的破坏时间,模拟结果与试验结果吻合较好。

Abstract

Unknown parameters of a modified crack growth model of float glass were determined. The crack length was assumed to follow four distributions. After selecting one distribution from four, the failure time of glass planes were simulated using different crack density and maximum crack length. Compare simulated and experimental results, the most appropriate crack density and the most appropriate maximum crack length were achieved. Four distributions combine with the corresponding crack density and the corresponding maximum crack length were used to simulated the failure stress. Compare simulated results of four distributions and experimental, the most appropriate distribution of crack length was determinate. The comparison was made between the simulation results and the former model, it was shown that this modified crack model can simulate the failure stress and the failure time accurately. The modified failure model with determinate parameters was used to predict the failure time of glass planes under blast loading. The simulation results are in good agreement with the experimental.

关键词

玻璃破坏应力 / 玻璃破坏时间 / 玻璃破坏预测 / 参数确定 / 动荷载

Key words

glass failure stress / glass failure time / glass failure prediction / parameter determinate / dynamic loading

引用本文

导出引用
柳锦春;于润清;唐德利. 动荷载作用下预测玻璃板破坏强度和破坏时间的一种改进模型——Ⅱ.参数确定及验证[J]. 振动与冲击, 2014, 33(13): 82-85
LIU Jin-chun;YU Run-qing;TANG De-li. An Improved Prediction Model of Failure Strength and Failure Time of Glass Panels under Dynmaic Loading —— II. Parameter Determination and Verification[J]. Journal of Vibration and Shock, 2014, 33(13): 82-85

PDF(1551 KB)

Accesses

Citation

Detail

段落导航
相关文章

/