Experimental Study on the Dynamic Mechanical Properties of Reinforced Concrete under Shock Loading
A simple experimental method was introduced to study the mechanical properties of reinforced concrete under shock loading. The one-stage light gas gun was used to test the mechanical properties of reinforced concrete with different reinforcement ratios under various impact velocities. Three Mn-Cu piezoresistive pressure gauges embedded in the target were used to record the voltage-time signals, from which the stress-strain curves of reinforced concrete were obtained using Lagrangian analysis. Experimental results indicated that the load-bearing capacities of reinforced concrete increased greatly with the impact velocity and the reinforcement ratio. The peak stress of the shock wave decreased exponentially with the propagation distance.
Key Wordsreinforced concrete shock loading Lagrangian analysis dynamic mechanical properties
Unable to display preview. Download preview PDF.
- 1.Bresler, B. and Bertero, Influence of high strain rate and cyclic loading of unconfined and confined concrete in compression. In: Heidebrecht, A.C., ed. Proceedings of Second Canadian Conference on Earthquake Engineering, Ontario, Hamilton, 1975: 1–13.Google Scholar
- 3.Hu, S.S., Wang, D.R. and Liu, J.F., Experimental study of dynamic mechanical behavior of concrete. Engineering Mechanics, 2001, 18(5): 115–118.Google Scholar
- 4.Ning, J.G., Liu, H.F. and Shang, L., Dynamic mechanical behavior and constitutive model of concrete subjected to impact loading. Science China: Physics, Mechanics & Astronomy, 2008, 51(11): 1745–1760.Google Scholar
- 5.Ning, J.G., Shang, L. and Sun, Y.X., Investigation on impact behavior of concrete. Acta Mechanica Sinica, 2006, 38(2):199–208.Google Scholar
- 6.Liu, H.F. and Liu, H.Y., A one dimensional dynamic constitutive model for concrete. International Journal of Nonlinear Sciences and Numerical Simulation, 2011, 11: 219–223.Google Scholar