Title: Sensitivity indices of a reinforced concrete beam exposed to explosions
Authors: Nazim Abdul Nariman
Addresses: Department of Civil Engineering, Tishk International University, Sulaimani, Qirga, 46001 Sulaimaniya, Kurdistan Region, Iraq
Abstract: Four design parameters, the density and modulus of elasticity of both concrete and steel reinforcement of a reinforced concrete beam in addition to the TNT mass have been utilised to determine the total sensitivity indices of all involved design parameters for the stiffness and the maximum tensile damage of the concrete. Sobol's sensitivity indices has been dedicated to determining the rate and rational effects of each involving design parameter making use of both an experimental method and MATLAB codes. The numerical simulations results using LS-DYNA software have shown that the uncertain TNT mass design parameter has the highest sensitivity with a rational percentage of 40.48% and 42.39% in the variation of the stiffness and the maximum tensile damage responses respectively. While both the density and modulus of elasticity of concrete are the second and the third design parameters with sensitivity indices up to 48.77%.
Keywords: LS-DYNA; TNT Mass; Sobol's sensitivity indices; stiffness; maximum tensile damage.
International Journal of Hydromechatronics, 2022 Vol.5 No.1, pp.92 - 108
Received: 10 Sep 2021
Accepted: 04 Nov 2021
Published online: 25 Apr 2022 *