Overpressure calculation model of sphere charge blastingwith moving velocity

Nie Yuan; Jiang Jianwei; Li Mei

doi:10.11883/1001-1455(2017)05-0951-06

Volume 37 Issue 5

Jul. 2017

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2017 > 37(5): 951-956

Nie Yuan, Jiang Jianwei, Li Mei. Overpressure calculation model of sphere charge blastingwith moving velocity[J]. Explosion And Shock Waves, 2017, 37(5): 951-956. doi: 10.11883/1001-1455(2017)05-0951-06

Citation:

Nie Yuan, Jiang Jianwei, Li Mei. Overpressure calculation model of sphere charge blastingwith moving velocity[J]. Explosion And Shock Waves, 2017, 37(5): 951-956. doi: 10.11883/1001-1455(2017)05-0951-06

Citation:

PDF( 2694 KB)

Overpressure calculation model of sphere charge blastingwith moving velocity

doi: 10.11883/1001-1455(2017)05-0951-06

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received Date: 2016-01-29
Rev Recd Date: 2016-06-12
Publish Date: 2017-09-25

Abstract

Abstract

In order to establish a calculation model for the dynamic blast overpressure field, a correction factor was introduced into the Baker formula, a model for calculating the peak overpressure only in a static blast. The method to obtain the correction factor containing the moving velocity, the azimuth and the scaled distance was established. For getting the function of the correction factor, spherical charge models with the typical moving velocity were established using the shock physical explicit Eulerian dynamic (SPEED) to simulate the dynamic blast process in the air. The peak overpressure in the typical azimuth and scaled distance was obtained. Based on the numerical results, a new calculation model was constructed using the data fitted. The result of the numerical simulation indicates that the corrected formula is a universal calculation model, capable of predicting the peak overpressure in dynamic blast.
- shockwave overpressure,
- dynamic blast,
- moving velocity,
- overpressure calculation model

FullText(HTML)

References(8)

References

[1]	张光莹, 周旭, 黄咏政, 等.动爆冲击波特性分析方法研究[C]//第四届全国计算爆炸力学会议论文集.2008: 282-287. http://www.wanfangdata.com.cn/details/detail.do?_type=conference&id=7079475
[2]	Henrych J, Abrahamson G R. The dynamics of explosion and its use[M]. New York: Elsevier Scientific Pub Co, 1979:218.
[3]	Baker W E. Explosions in air[M]. Austin: University of Texas Press, 1974:6-10.
[4]	Sadovskyi M A. Mechanical action of air shock waves of explosion, based on experimental data[M]. Moscow: Izd Akad Nauk SSSR, 1952:1-2.
[5]	北京工业学院八系.爆炸及其作用[M].北京:工业出版社, 1978.
[6]	Izadifard R A, Foroutan M. Blastwave parameters assessment at different altitude using numerical simulation[J]. Turkish Journal of Engineering & Enviromental Sciences, 2010, 34(1):25-41. http://d.old.wanfangdata.com.cn/NSTLQK/NSTL_QKJJ0216335761/
[7]	NUMERICS GmbH. SPPED user's Manual[Z]. 2012.
[8]	Lee E, Finger M, Collins W. JWL equation of state coeffients for high explosives: UCID-16189[R]. 1973.