Determination of energy damping upon impact load in reinforced concrete sandwich plates with different core geometries

Document Type : Article


1 Firat University, Faculty of Engineering, Department of Civil Engineering, 23100, Elazıg

2 Turgut Ozal University, Faculty of Engineering, Department of Civil Engineering, 44210, Malatya


Under impact loads, it may be a challenge to analyze reinforced concrete (RC) sandwich plates with hollow structures in terms of crushing, punching, cracking, and crack trajectories via static and dynamic equations.In the literature, the finite element solutions were conducted after determining the behaviors of the materials according to test results.Therefore,it is required to conduct experiments to determine the behaviors of RC plates to investigate their behaviors.In this study, the behaviors of sandwich plates under impact loads were analyzed experimentally.The sandwich plates were manufactured by cutting polyester foams (PF) into hexagonal prisms, square prisms, I-type, and S-type, and installing them inside the reinforced concrete plates.The newly manufactured sandwich plates are 27% lighter than the full plate.A weight of 320 kg was dropped freely from 2.5m, and the load was implemented on the center of the plate at a velocity of 7.5 m/s.Similar implementations were also conducted for filled plates, and the maximum displacements were measured in both types of plate tests.By comparing the measurements obtained from each test,the sandwich plate with core geometry that provided the highest absorption, namely, the lowest displacement, was determined. In the analyses, the S-type core geometry demonstrated more absorption compared to other core geometries.


1. Kennedy, R.P. "A review of procedures for the analysis and design of concrete structures to resist missile impact effects", Nucl. Eng. Des., 37, pp. 183-203 (1976).
2. Zineddin, M. and Krauthammer, T. "Dynamic response and behavior of reinforced concrete slabs under impact loading", Int. J. Impact Eng., 34(9), pp. 1517-1534 (2007).
3. Chen, Y. and May, I.M. "Reinforced concrete members under drop-weight impacts", Proc. Inst. Civ. Eng. Struct. Build., 162(1), pp. 45-56 (2009).
4. Zivaljic, N., Nikolic, Z., Smoljanovic, H., and Munjiza, A. "Numerical simulation of reinforced concrete structures under impact loading", Materwiss. Werksttech., 50(5), pp. 599-610 (2019).
5. Hummeltenberg, A., Beckmann, B., Weber, T., and Curbach, M. "Investigation of concrete slabs under impact load", Appl. Mech. Mater., 82, pp. 398-403 (2011).
6. Mao, L. and Barnett, S.J. "International journal of impact engineering investigation of toughness of ultra high performance fibre reinforced concrete (UHPFRC) beam under impact loading", Int. J. Impact Eng., 99, pp. 26-38 (2017).
7. Zhao, D.B., Yi, W.J., and Kunnath, S.K., "Shear mechanisms in reinforced concrete beams under impact loading", J. Struct. Eng., 143(9), p. 04017089 (2017).
8. Kacaran, G. "Experimental investigation of the collision behavior of reinforced concrete  floors", Eskisehir Osmangazi Univ. master thesis, p. 121 (2018).
9. Ye, Z., Zhao, D., Sui, L., Huang, Z., and Zhou, X. "Behaviors of large-rupture-strain fiber-reinforced polymer strengthened reinforced concrete beams under static and impact loads", Front. Mater., 7(November), pp. 1-17 (2020).
10. Tan, D., Lung, T., and Hua, L.J. "Flexural behaviour of reinforced concrete beam embedded with different alignment of polystyrene", pp. 13-18 (2020).
11. Sun, G., Zhang, Y., Tian, Y., Bo, L., Shen, J., and Shi, J. "Investigation of residual bearing capacity of corroded reinforced concrete short columns under impact load based on nondestructive testing", Math. Probl. Eng., 2020 (2020).
12. Loganaganandan, M., Murali, G., and Parasuraman, M. "Experimental study on GFRP strips strengthened new two stage concrete slabs under falling mass collisions", 25, pp. 235-244 (2021).
13. Khamies, T. and Medhlom, M.K. "Effect of impact load on the performance of concrete", Journal of Engineering and Sustainable Development (JEASD), 25(01), pp. 68-79 (2021).
14. Tran, T.T., Pham, T.M., Huang, Z., Chen, W., and Hao, H. "Impact response of fibre reinforced geopolymer concrete beams with BFRP bars and stirrups", Eng. Struct., 231 (January), p. 111785 (2021).
15. Batarlar, T. "Behavior of reinforced concrete slabs subjected to impact loads", Ozmir Inst. Technol. thesis (2013).