A method for calculating critical spalling and perforating thicknesses of concrete slabs subjected to contact explosion

Yue Songlin; Wang Mingyang; Zhang Ning; Qiu Yanyu; Wang Derong

doi:10.11883/1001-1455(2016)04-0472-11

Volume 36 Issue 4

Oct. 2018

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Article Navigation > Explosion And Shock Waves > 2016 > 36(4): 472-482

REN Xing-tao, ZHOU Ting-qing, ZHONG Fang-ping, HU Yong-le, WANG Wan-peng. Dynamicmechanicalbehaviorofsteel-fiberreactivepowderconcrete[J]. Explosion And Shock Waves, 2011, 31(5): 540-547. doi: 10.11883/1001-1455(2011)05-0540-08

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Yue Songlin, Wang Mingyang, Zhang Ning, Qiu Yanyu, Wang Derong. A method for calculating critical spalling and perforating thicknesses of concrete slabs subjected to contact explosion[J]. Explosion And Shock Waves, 2016, 36(4): 472-482. doi: 10.11883/1001-1455(2016)04-0472-11

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A method for calculating critical spalling and perforating thicknesses of concrete slabs subjected to contact explosion

doi: 10.11883/1001-1455(2016)04-0472-11

State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China

Received Date: 2013-09-18
Rev Recd Date: 2014-12-21
Publish Date: 2016-07-25

Abstract

Abstract

Tanking account of the mass conservation conditions, incompressible conditions and boundary conditions, this paper described the dynamic behaviors of the medium based on the plastic-rigid model and established the compatible dynamic velocity field in the plastic zone. In addition, utilizing the limit equilibrium theory, this paper derived the equations of material resistance to explosions in both the infinite and the semi-infinite medium. Combined with the initial and boundary conditions, the equations of motion can be solved and the critical depth can be obtained. Besides, this paper has obtained a dimensionless impact factor which reflects the integrated nature of explosive sources and media. The calculated results illustrated that the critical depth and the dimensionless impact factor have a proportional relationship. Finally, the comparative analysis of the empirical formulas with the derived equations proved that our calculation methods are valid and widely applicable.
- mechanics of explosion,
- critical thickness,
- plastic-rigid model,
- the limit load theorems,
- contact explosion,
- spallation,
- perforation,
- dimensionless impact factor

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References

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