接触爆炸荷载作用下带孔防护结构内冲击波的传播规律

范进; 徐大立; 任新见

doi:10.11883/1001-1455(2014)06-0658-09

接触爆炸荷载作用下带孔防护结构内冲击波的传播规律

doi: 10.11883/1001-1455(2014)06-0658-09

1.
南京理工大学土木工程系，江苏南京 210094
2.
总参工程兵科研三所，河南洛阳471023

详细信息

作者简介:
范进(1962—), 男, 博士, 教授

中图分类号: O382
计量
- 文章访问数: 3055
- HTML全文浏览量: 347
- PDF下载量: 374
- 被引次数: 7
出版历程
- 收稿日期: 2013-04-01
- 修回日期: 2013-07-17
- 刊出日期: 2014-11-25

Propagation of shock waves in protective structures with holes under contact explosive loads

Fan Jin^{1
, ,},
Xu Da-li¹,
Ren Xin-jian²

1.
Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
The Third Research Institute of Corps of Engineering, General Staff of PLA, Luoyang 471023, Henan, China

More Information

Corresponding author: Fan Jin, fanjinem@njust.edu.cn

摘要

摘要: 采用有限元分析软件ATUODYN，对接触爆炸荷载作用下带孔防护结构内冲击波的传播进行了数值模拟，得到了防护结构孔口和内部中心处冲击波超压－时间曲线；分析了炸药量和爆心距孔口距离对防护结构内部超压、正压冲量的影响；以数值计算结果为基础，结合量纲分析，拟合得到了结构内部中心处爆炸冲击波特征参数的预估公式。
- 爆炸力学 /
- 超压 /
- 冲击波 /
- 防护结构 /
- 接触爆炸 /
- 冲量
Abstract: The finite element code, AUTODYN, was used to numerically simulate the propagation of the shock wave in the protective structure with holes under contact explosive loads.The overpressuretime curves were obtained for the shock waves around the orifice and in the center of the protective structure, respectively.The effects of the explosive charge weight and the blast center distance on the overpressure and impulse in the protective structures were analyzed.And based on the numerical calculation, the prediction formulas for the characteristic parameters were achieved by applying the dimensional analysis method.
- mechanics of explosion /
- overpressure /
- shock wave /
- protective structure /
- contact explosion /
- impulse

HTML全文

图 1 模型坑道实物

Figure 1. Model tunnel for experiments

下载: 全尺寸图片幻灯片

图 2 直坑道化爆实验测点布置示意

Figure 2. The layout of gaging points for chemical explosion experiments in the straight tunnel

下载: 全尺寸图片幻灯片

图 3 典型监测点的冲击波超压－时间曲线

Figure 3. Overpressure－time curves of shock waves at typitcal gaging points

下载: 全尺寸图片幻灯片

图 4 空气、炸药及结构模型的实体

Figure 4. The model for air, TNT and structure

下载: 全尺寸图片幻灯片

图 5 钢筋模型

Figure 5. The model for reinforcing bars

下载: 全尺寸图片幻灯片

图 6 x＝0.4m，m＝4kg工况时，孔口处和结构内部中心处的冲击波超压－时间曲线

Figure 6. Overpressure-time curves of the shock waves around the orifice and in the center of the structure in the case of x＝0.4m, m＝4kg

下载: 全尺寸图片幻灯片

图 7 炸药在带孔结构外表面爆炸的冲击波传播压力云图

Figure 7. Pressure nephograms of the shock waves induced by TNT explosion outside the protective structure with holes

下载: 全尺寸图片幻灯片

图 8 不同工况下，测点1处的冲击波超压－时间曲线

Figure 8. Overpressure－time curves of the shock waves at the gaging point 1in the different cases

下载: 全尺寸图片幻灯片

图 9 弹药在混凝土结构表面爆炸示意图

Figure 9. The layout of the explosive outside the concrete structure

下载: 全尺寸图片幻灯片

表 1 不同工况下，结构内部中心处（测点1）冲击波的峰值超压和正压冲量

Table 1. The maximum overpressures and the positive pressure impulse of the shock waves in the center of the structure(the gaging point 1)

工况	x/m	m/kg	Δp_max/kPa	I/(kPa·ms)
1	0.1	1	37.335	48.986
2	0.1	2	74.803	75.295
3	0.1	4	143.524	145.473
4	0.1	8	236.057	294.815
5	0.2	1	19.280	25.333
6	0.2	2	32.664	42.250
7	0.2	4	72.159	66.803
8	0.2	8	144.075	133.857
9	0.4	1	13.827	19.713
10	0.4	2	19.716	26.836
11	0.4	4	30.745	43.958
12	0.4	8	50.812	63.402
13	0.8	1	11.581	19.290
14	0.8	2	18.703	25.821
15	0.8	4	23.837	41.739
16	0.8	8	35.539	49.389

下载: 导出CSV

参考文献(14)

[1]	Henrych J.爆炸动力学及其应用[M].熊建国, 译.北京: 科学出版社, 1994: 74-77.
[2]	叶序双.爆炸作用理论基础[M].南京: 解放军理工大学, 2001: 64-66.
[3]	Twisdale L A, Sues R H, Lavelle F M. Reliability-based analysis and design methods for reinforced concrete protective structures[M]. Tyndall Air Force Base: Air Force Civil Engineering Support Agency, 1993: 195-199.
[4]	Welch C R. In-tunnel airblast engineering model for internal and external detonations[C]//Proceedings of the 8th International Symposium on Interaction of the Effects of Munitions with Structures, 1997: 195-208.
[5]	Anet B, Binggeli E D. The use of the LS 2000-design charts for predictions of air blast loading in tunnels due to HE-detonations at the tunnel entrance[C]//Proceedings of the 9th International Symposium on Interaction of the Effects of Munitions with Structures. 1999: 225-234.
[6]	庞伟宾, 何翔, 李茂生, 等.空气冲击波在坑道内走时规律的实验研究[J].爆炸与冲击, 2003, 23(6): 573-576. Pang Wei-bin, He Xiang, Li Mao-sheng, et al. The formula for airblast time of arrival in tunnel[J]. Explosion and Shock Waves, 2003, 23(6): 573-576.
[7]	黄广炎, 冯顺山, 王云峰.装药约束对腔室爆炸冲击波传播特性影响的数值分析[J].系统仿真学报, 2009, 21(1): 58-61. Huang Guang-yan, Feng Shun-shan, Wang Yun-feng. Numerical analysis for influence of restriction of charges on shock wave propagation inside cavity[J]. Journal of System Simulation, 2009, 21(1): 58-61.
[8]	刘瑞朝, 任新见.常规武器袭击下目标毁伤判据研究进展[J].防护工程, 2012, 37(5): 60-66. Liu Rui-chao, Ren Xin-jian. Research progress of the damage criterion by conventional weapon[J]. Protective Engineering, 2012, 37(5): 60-66.
[9]	任新见, 张庆明, 薛一江, 等.坑道口部B炸药爆炸冲击波传播速度模型试验研究[J].振动与冲击, 2012, 31(7): 71-73. Ren Xin-jian, Zhang Qing-ming, Xu Yi-jiang, et al. Scale model tests to determine in-tunnel blast impact wave velocity for B-charges at tunnel entrance[J]. Journal of Vibration and Shock, 2012, 31(7): 71-73.
[10]	Welch C R. In-tunnel airblast engineering model for internal and external detonations[C]//Proceedings of the 8th International Symposium on Interaction of the Effects of Munitions with Structures. 1997: 195-208.
[11]	Century Dynamics Inc. Autodyn theory manual[M]. Concord, CA: Century Dynamics Inc, 2006: 133-141.
[12]	Riedel W, Thoma K, Hiermaier S, et al. Penetration of reinforced concrete by BETA-B-500numerical analysis using a new macroscopic concrete model for hydrocodes[C]//Proceedings of the 9th International Symposium on Interaction of the Effects of Munitions with Structures. 1999: 315-322.
[13]	Johnson G R, Cook W H. A constitutive model and data for metals subjected to large stains, high stain rates and high temperatures[C]//Proceedings of the 7th International Symposium on Ballistics, 1983: 541-547.
[14]	谈庆明.量纲分析[M].合肥: 中国科学技术大学出版社, 2005: 120-123.