冲击波作用下单层钢化玻璃应变阈值的数值模拟

刘俊; 田宙; 钟巍

doi:10.11883/bzycj-2016-0300

冲击波作用下单层钢化玻璃应变阈值的数值模拟

doi: 10.11883/bzycj-2016-0300

刘俊^1,,
田宙²,
钟巍^{2, 3}

1.
湘潭大学材料科学与工程学院, 湖南湘潭 411100
2.
西北核技术研究所, 陕西西安 710024
3.
北京大学数学科学学院, 北京 100871

详细信息

作者简介:
刘俊(1991-), 男, 硕士, 201431101263@smail.xtu.edu.cn

中图分类号: O383
计量
- 文章访问数: 5070
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- PDF下载量: 193
- 被引次数: 0
出版历程
- 收稿日期: 2016-10-09
- 修回日期: 2017-03-13
- 刊出日期: 2018-05-25

Numerical simulation of strain threshold of monolithic tempered glass under blast wave

LIU Jun^1
,,
TIAN Zhou²,
ZHONG Wei^{2, 3}

1.
School of Materials Science and Engineering, University of Xiangtan, Xiangtan 411100, Hunan, China
2.
Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi, China
3.
School of Mathematical Sciences, Peking University, Beijing 100871, China

摘要

摘要: 借助ANSYS/LS-DYNA程序，采用Lagrange方法描述钢化玻璃，引入侵蚀算法来模拟钢化玻璃的破坏，对爆炸冲击波载荷进行合理的简化，选取最大伸长线应变理论作为单层钢化玻璃破坏准则。利用建立的模型对爆炸冲击波对单层钢化玻璃的作用过程进行了数值模拟。通过反复调试和大量计算得到单层钢化玻璃破坏的应变阈值为0.002 2，并用场地实验结果对数值结果进行了验证，证明此结果是合理的。
- 钢化玻璃 /
- 应变阈值 /
- Lagrange方法 /
- 侵蚀算法
Abstract: In this study, based on ANSYS/LS-DYNA, we described the tempered glass using the Lagrange method, reasonably simplified the blast wave load by simulating the failure of the tempered glass using the erosion algorithm, with the maximum elongation line strain theory used as the failure criterion for the monolithic tempered glass. We then simulated the monolithic tempered glass under the blast wave using model thus established. Through a large number of debugging and calculations, we identified the strain threshold of the failure of the monolithic tempered glass as 0.002 2. The numerical results were verified by the experimental results and proved as reasonable.
- tempered glass /
- strain threshold /
- Lagrange method /
- erosion algorithm

HTML全文

图 1 压力随时间变化

Figure 1. Variation of pressure with time

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图 2 简化三角形载荷

Figure 2. Simplified triangular load

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图 3 最大位移随网格尺寸变化

Figure 3. Variation of maximum displacement with grid size

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图 4 计算时间随网格尺寸变化

Figure 4. Variation of computations time with grid size

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图 5 实验布局示意图(俯视图)

Figure 5. Experimental layout

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图 6 实验5的计算位移云图和现场

Figure 6. Calculation of displacement cloud and scene of experiment 5

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图 7 实验7的计算位移云图和现场

Figure 7. Calculation of displacement cloud and scene of experiment 7

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图 8 实验5的计算位移云图和高速摄影结果

Figure 8. Calculation of displacement cloud and high speed photography of experiment 5

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图 9 实验7的计算位移云图和高速摄影结果

Figure 9. Calculation of displacement cloud and high speed photography of experiment 7

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表 1 实验结果

Table 1. Experiment results

实验	W/kg	R/m	(RW^-1/3)/(m·kg^-1/3)	p_m/kPa	t₊/ms	I/(kPa·ms)	玻璃状态
5	5	12	7.0	57.5	5.7	164.2	未破坏
7	5	11	6.4	69.4	5.4	188.6	破坏

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表 2 不同应变阈值下模拟结果与实验结果对比

Table 2. Comparison of simulation results at different strain thresholds with experiments

ε_th	玻璃状况
ε_th	实验5	数值模拟5	实验7	数值模拟7
0.000 5	未破坏	破坏	破坏	破坏
0.001 0	未破坏	破坏	破坏	破坏
0.002 0	未破坏	破坏	破坏	破坏
0.003 0	未破坏	未破坏	破坏	未破坏

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表 3 不同应变阈值下模拟结果与实验结果对比

Table 3. Comparison of simulation results at different strain thresholds with experiments

ε_th	数值模拟5		数值模拟7		玻璃状况对比
ε_th	p_m/kPa	I/(kPa·ms)	p_m/kPa	I/(kPa·ms)	实验5	实验7
0.002 2	57	171	70	210	一致	一致
0.002 4	57	171	70	210	一致	不一致
0.002 6	57	171	70	210	一致	不一致
0.002 8	57	171	70	210	一致	不一致

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参考文献(13)

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