A new calculation method for shock factor of underwater explosion

Hu Hong-wei; Song Pu; Wang Jian-ling; Guo Wei; Xu Hong-tao; Jin Peng-gang; Ren Song-tao

Volume 34 Issue 1

Mar. 2014

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Hu Hong-wei, Song Pu, Wang Jian-ling, Guo Wei, Xu Hong-tao, Jin Peng-gang, Ren Song-tao. A new calculation method for shock factor of underwater explosion[J]. Explosion And Shock Waves, 2014, 34(1): 11-16.

Citation:

Hu Hong-wei, Song Pu, Wang Jian-ling, Guo Wei, Xu Hong-tao, Jin Peng-gang, Ren Song-tao. A new calculation method for shock factor of underwater explosion[J]. Explosion And Shock Waves, 2014, 34(1): 11-16.

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A new calculation method for shock factor of underwater explosion

Xi’an Modern Chemistry Research Institute,Xi’an710065,Shaanxi,China

Received Date: 2012-07-18
Rev Recd Date: 2012-11-21
Publish Date: 2014-02-10

Abstract

Abstract

Aimed to the limitations of the existent calculation methods for the shock factor of the underwater explosion in near field，a new formula for the shock factor determination was derived from the product of the shock－wave peak pressure and the positive impulse.The underwater explosion tests were carried out on several typical explosives to obtain their shock wave parameters as well as their similar equation of the shock wave peak pressure and the impulse.The underwater explosion shock factors and the charge indexes for these explosives were calculated by using the new formula.And the shock factors by the new formula were compared with those by the calculation method based on the plane－wave assumption.The results show that the exponent of the charge weight in the new shockfactor formula is 0.5not only suitable to all the TNT－based explosives，but also to the RDX－based and HMX－based compound explosives.Due to the amendment of the shock wave shape，the new calculation formula can clearly display the physical meaning of the shock factor from the damage effect of the shock waves，so it is more accurate for calculating the shock factor of the underwater explosion in near field.
- mechanics of explosion,
- shock factor,
- underwater explosion,
- aluminized explosives,
- exponents of the charge weight,
- shock wave

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References(11)

References

[1]	Liang Cho-chung, Tai Yuh-shiou. Shock responses of a surface ship subjected to noncontact underwater explosions[J]. Ocean Engineering, 2006, 33: 748-772. doi: 10.1016/j.oceaneng.2005.03.011
[2]	姚熊亮, 曹宇, 郭君, 等. 一种用于水面舰船的水下爆炸冲击因子[J]. 哈尔滨工程大学学报, 2007, 28(5): 501-509. doi: 10.3969/j.issn.1006-7043.2007.05.004 Yao Xiong-liang, Cao Yu, Guo Jun, et al. Research on the response of warships to impulsive factor of underwater explosions[J]. Journal of Harbin Engineering University, 2007, 28(5): 501-509. doi: 10.3969/j.issn.1006-7043.2007.05.004
[3]	库尔 P. 水下爆炸[M]. 北京: 国防工业出版社, 1960: 202-205.
[4]	Reid W D. The response of surface ships to underwater explosions[R]. Canberra, Australia: Defense Science and Technology Organization, 1996.
[5]	O’Hara G J, Cunniff P F. Scaling for shock response of equipment in different submarines[J]. Shock and Vibra-tion, 1993, 1(2): 161-170. doi: 10.1155/1993/298290
[6]	Held M. Similarities of shock wave damage in air and in water[J]. Propellants, Explosives, Pyrotechnics, 1990, 15(4): 149-156. doi: 10.1002/prep.19900150406
[7]	Mellor M. Blasting and blast effects in cold regions: Underwater explosions[R]. Hanover, New Hampshire: Cold Regions Research and Engineering Laboratory, 1986.
[8]	王建灵, 赵东奎, 郭炜, 等. 水下爆炸能量测试中炸药入水深度的确定[J]. 火炸药学报, 2002, 25(2): 30-31;44. doi: 10.3969/j.issn.1007-7812.2002.02.012 Wang Jian-ling, Zhao Dong-kui, Guo Wei, et al. Determination of the reasonable depth of explosives in water to measure underwater explosion energy[J]. Chinese Journal of Explosives & Propellants, 2002, 25(2): 30-31;44. doi: 10.3969/j.issn.1007-7812.2002.02.012
[9]	赵继波, 谭多望, 李金河, 等. 柱形装药水中爆炸近场径向压力测试初探[C]∥第五届全国爆炸力学实验技术会议论文集. 西安: 中国力学学会爆炸力学实验技术专业组, 2006: 89-92.
[10]	胡宏伟, 王建灵, 徐洪涛, 等. RDX基含铝炸药水中爆炸近场冲击波特性[J]. 火炸药学报, 2009, 32(2): 1-5. doi: 10.3969/j.issn.1007-7812.2009.02.001 Hu Hong-wei, Wang Jian-ling, Xu Hong-tao, et al. Underwater shockwave characteristics of RDX-based aluminized explosives in near-field range[J]. Chinese Journal of Explosives & Propellants, 2009, 32(2): 1-5. doi: 10.3969/j.issn.1007-7812.2009.02.001
[11]	Bjarnholt G. Suggestions on standards for measurement and data evaluation in the underwater explosion test[J]. Propellants, Explosives, Pyrotechnics, 1980(2/3): 67-74.