Numerical evaluation of the performance of two-way RC panels under blast loads

Abstract

Nonlinear dynamic numerical modelling and analysis of concrete panels subjected to blast loads is presented in this paper. Reinforced concrete panels of dimension 1.0 1.0 m and different thicknesses and supported on four sides are subjected to blast loads produced by the detonation of high explosive charges. The modelling and analysis was conducted using ANSYS AUTODYN solver. The accuracy of the model is verified against experimental results of blast load tests on reinforced concrete horizontal slabs subjected to the detonation of high explosive charges above them. The model was capable of simulating the observed damage and displacement with reasonable accuracy. The verified model is used for extensive parametric study to examine the effect of different design parameters on the performance of reinforced concrete slabs under blast loads. The design parameters considered in this study include the effect of concrete compressive strength, panel thickness, reinforcement steel ratio, arrangement of reinforcement steel, and boundary condition on the behaviour of RC panel under blast load. The performance was evaluated in terms of maximum displacement, extent of damage and energy absorbed.

Performance of one-way reinforced concrete walls subjected to blast loads

“…The assigned load is chosen to be pressure type and equal to 5.059 MPa in time duration equal to 7.7 × 10 −4 sec. Correlating numerical to experimental results reveals that the mathematical model gives reasonably accurate results [12]. Thus, the developed models is adapted in this study.…”

“…The control specimens of the experimental program are modelled, and its nonlinear blast response is simulated and compared to the test results. The validation of the numerical model along with detailed parametric study on the behaviour of two-way reinforced concrete slabs subjected to blast load are conducted by the authors of this paper [12]. ANSYS V.14.5 -Explicit dynamics system is used for simulating the response of the control specimen to blast.…”

Challenges in Modelling Reinforced Concrete Panels Subjected to Blast Load - A Critical Review

“…Using ANSYS AUTODYN software, Abdel-Mooty et al [10] conducted nonlinear dynamic numerical modelling of concrete panels subjected to blast loads. They validated the accuracy of the model against experimental results of blast loading response of reinforced concrete panels conducted earlier by Razaqpur et al [11].…”

“…The assigned load type is chosen to be a uniform pressure equal to 5.059 MPa with a time duration equal to 7.7×10 -4 sec. The numerical model is verified and used to (i) investigate the strain field on the surface of the concrete panel, the kinetic energy, the internal energy, and the total work, and (ii) to carry out a parametric study including the concrete compressive strength, concrete panel thickness, boundary conditions, reinforcement steel quantity, and steel reinforcement arrangement [10].…”

Performance of Masonry Walls Strengthened with RC Wall Jacket Subjected to Simulated Blast Loads

“…In this study a numerical model was developed to simulate the behavior od masonry and RC wall under the effect of high intensity short duration blast load. The model is developed using ANSYS AUTODYN Solver provided by Workbench explicit dynamic modules in ANSYS V14.5 and tested against the experimental results of blast test conducted on RC panels [12].…”