Numerical Analyses of Local Damage of Concrete Slabs by Normal Impact of Deformable Solid Projectiles
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Deformable solid projectiles undergo projectile mushrooming during impact and thus are different from rigid and soft hollow projectiles; however, limited work has been conducted on the impact of deformable solid projectiles on concrete targets. In this study, an explicit dynamic finite element procedure is employed to study nine existing experimental tests on the normal impact of a deformable solid (lead) projectile into a plain concrete (PC) slab. To correctly model the impact, both non-linear material response and progressive finite element erosion have been taken into account for the deformable solid projectile and the PC slab. The numerical results are compared with experimental results in terms of different modes of local damage to the PC slab and the maximum penetration depth of the PC slab. The mechanism of the front cratering, the scabbing, and the perforation of concrete target under the impact of deformable solid projectile and the effect of projectile rigidity on the local damage to the PC slab are investigated. A dose-response relation is used to describe the variation of the maximum penetration depth with the impact velocity. Some model parameters that most affect the simulation results are also highlighted.
Keywordsdeformable solid projectile projectile mushrooming LS-DYNA RHT concrete model dose-response relation
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This research was supported by the National Natural Science Foundation of China (Grant No. 51508271) and the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20150958); these are gratefully acknowledged.
- Adams, B. (2003). Simulation of ballistic impacts on armored civil vehicles, MSc Thesis, Eindhoven University of Technology, Eindhoven, Netherlands.Google Scholar
- Aquelet, N. and Souli, M. (2008). “2D to 3D ALE mapping.” Proc. of 10th Int. LS-DYNA Users Conference, Detroit, MI, USA, pp. 23–34.Google Scholar
- Borrvall, T. and Riedel, W. (2011), “The RHT concrete model in LS-DYNA.” Proc. of 8th European LS-DYNA Users Conference, Strasbourg, France.Google Scholar
- Chen, X. W. and Li, Q. M. (2004). “Transition from nondeformable projectile penetration to semihydrodynamic penetration.” Journal of Engineering Mechanics, Vol. 130, No. 1, pp. 123–127, DOI: https://doi.org/10.1061/(ASCE)0733-9399(2004)130:1(123).CrossRefGoogle Scholar
- Cox, P. A., Mathis, J., Wilt, T., Chowdhury, A., and Ghosh, A. (2006). “Assessment of structural robustness against aircraft impact at the potential repository at yucca mountain — Progress report II.” Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, USA.Google Scholar
- Eibl, J. (1987). “Soft and hard impact.” Proc. of the 1th Int. Con. on Concrete for Hazard Protection, Edinburgh, Scotland, pp. 175–186.Google Scholar
- Forrestal, M. J. and Piekutowski, A. J. (2000). “Penetration experiments with 6061-T6511 aluminum targets and spherical-nose steel projectiles at striking velocities between 0.5 and 3.0 km/s.” International Journal of Impact Engineering, Vol. 24, No. 1, pp. 57–67, DOI: https://doi.org/10.1016/S0734-743X(99)00033-0.CrossRefGoogle Scholar
- Khoda-Rahmi, H., Fallahi, A., Liaghat, G. H. (2006). “Incremental deformation and penetration analysis of deformable projectile into semi-infinite target.” International Journal of Solids and Structures, Vol. 43, No. 3, pp. 569–582, DOI: https://doi.org/10.1016/j.ijsolstr.2005.06.072.CrossRefGoogle Scholar
- Li, Q. M. and Tong, D. J. (2003). “Perforation thickness and ballistic limit of concrete target subjected to rigid projectile impact.” Journal of Engineering Mechanics, Vol. 129, No. 9, pp. 1083–1091, DOI: https://doi.org/10.1061/(ASCE)0733-9399(2003)129:9(1083).CrossRefGoogle Scholar
- LSTC (2014). LS-DYNA keyword user’s manual-Version R7.1, Livermore Software Technology Corporation, Livermore, CA, USA.Google Scholar
- Mohotti, D., Ngo, T., and Mendis, P. (2013). “Numerical simulation of impact and penetration of ogvial shaped projectiles through steel plate structures.” http://dl.lib.mrt.ac.lk/bitstream/handle/123/9547/SEC-11-183.pdf?sequence=1 [Accessed on July 5, 2016].
- Pontiroli, C., Rouquand, A., Daudeville, L., and Baroth, J. (2012). “Soft projectile impacts analysis on thin reinforced concrete slabs: Tests, modelling and simulations.” European Journal of Environmental and Civil Engineering, Vol. 16, No. 9, pp. 1058–1073, DOI: https://doi.org/10.1080/19648189.2012.699745.CrossRefGoogle Scholar
- Tanaka, N. and Ohno, T. (2004). “Examine the local damage of concrete plate subjected to hypervelocity oblique impact of small projectile.” Proc. of 7th Symposium on the Impact Problem of the Structure, Japan Society of Civil Engineering, Vol. 7, pp. 147–152 (in Japanese).Google Scholar
- Wilt, T., Chowdhury, A., and Cox, P. A. (2011). “Response of reinforced concrete structures to aircraft crash impact.” US Nuclear Regulatory Commission Contract NRC-02-07-006, San Antonio, TX, USA.Google Scholar