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CLC number: TU411

On-line Access: 2012-05-04

Received: 2011-09-19

Revision Accepted: 2011-11-21

Crosschecked: 2012-02-27

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.5 P.335-343

10.1631/jzus.A1100227


Geotechnical centrifuge model tests for explosion cratering and propagation laws of blast wave in sand


Author(s):  Yi-kai Fan, Zu-yu Chen, Xiang-qian Liang, Xue-dong Zhang, Xin Huang

Affiliation(s):  State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100044, China; more

Corresponding email(s):   yk_fan2006@163.com

Key Words:  Centrifuge model tests, Explosion, Craters, Blast waves, Sand


Yi-kai Fan, Zu-yu Chen, Xiang-qian Liang, Xue-dong Zhang, Xin Huang. Geotechnical centrifuge model tests for explosion cratering and propagation laws of blast wave in sand[J]. Journal of Zhejiang University Science A, 2012, 13(5): 335-343.

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%A Xue-dong Zhang
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T1 - Geotechnical centrifuge model tests for explosion cratering and propagation laws of blast wave in sand
A1 - Yi-kai Fan
A1 - Zu-yu Chen
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A1 - Xin Huang
J0 - Journal of Zhejiang University Science A
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EP - 343
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DOI - 10.1631/jzus.A1100227


Abstract: 
This paper presents the explosion cratering effects and their propagation laws of blast waves in dry standard sands using a 450 g-t geotechnical centrifuge apparatus. Ten centrifuge model tests were completed with various ranges of explosive mass, burial depth and centrifuge accelerations. Eleven accelerometers were installed to record the acceleration response in sand. The dimensions of the explosion craters were measured after the tests. The results demonstrated that the relationship between the dimensionless parameters of cratering efficiency and gravity scaled yield is a power regression function. Three specific function equations were obtained. The results are in general agreement with those obtained by other studies. A scaling law based on the combination of the π terms was used to fit the results of the ten model tests with a correlation coefficient of 0.931. The relationship can be conveniently used to predict the cratering effects in sand. The results also showed that the peak acceleration is a power increasing function of the acceleration level. An empirical exponent relation between the proportional peak acceleration and distance is proposed. The propagation velocity of blast waves is found to be ranged between 200 and 714 m/s.

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Reference

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