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KSCE Journal of Civil Engineering

, Volume 23, Issue 12, pp 5121–5132 | Cite as

Numerical Analyses of Local Damage of Concrete Slabs by Normal Impact of Deformable Solid Projectiles

  • Ling-Yu XuEmail author
  • Fei Cai
  • Ying-Ying Xue
  • Chiaki Takahashi
  • Yong-Yi Li
Nuclear Power Engineering
  • 39 Downloads

Abstract

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.

Keywords

deformable solid projectile projectile mushrooming LS-DYNA RHT concrete model dose-response relation 

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Notes

Acknowledgements

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.

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Copyright information

© Korean Society of Civil Engineers 2019

Authors and Affiliations

  1. 1.College of Transportation Science & EngineeringNanjing Tech UniversityNanjingChina
  2. 2.Dept. of Environmental Engineering ScienceGunma UniversityKiryuJapan
  3. 3.Earthquake Administration of Jiangsu ProvinceNanjingChina
  4. 4.Pacific Consultants Co. Ltd.TokyoJapan
  5. 5.College of Transportation Science & EngineeringNanjing Tech UniversityNanjingChina

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