Kinetic response of reinforced concrete slabs to high-velocity projectile impact-robust numerical and statistical driven modeling techniques

• Published in: Latin American journal of solids and structures 2024-01, Vol.21 (3)
• Main Authors: Babiker, Ammar, Abbas, Yassir M., Khan, M. Iqbal, Khatib, Jamal M.
• Format: Article
• Language: English
• Subjects: ENGINEERING, CIVIL; ENGINEERING, MECHANICAL; MECHANICS
• ISSN: 1679-7817; 1679-7825; 1679-7825
• DOI: 10.1590/1679-78258009

Abstract This research explores the dynamic responses of reinforced concrete (RC) slabs under high-velocity impacts. The study utilizes advanced numerical simulations to investigate the effects of varied impact loading and slab depths, unveiling complex rate-dependent behaviors (i.e., impact forces, reactions, accelerations, and displacements) across a diverse range of velocities. The alignment of simulation results with experimental data validates the robustness and accuracy of the employed approach. Additionally, an analytical model predicting the load-carrying capacity and deflection of these slabs under high-velocity loads is proposed. The results indicated that higher loading rates correlate with increased forces and damage until perforation. Analytical models exhibit strong performance within a ±10% error margin, and response surface analysis quantifies the impactor velocity's influence on load for a constant thickness. Overall, this investigation sheds light on the dynamic complexities of RC slabs subjected to high-velocity impacts, providing valuable insights for structural design considerations.