Damage investigation of blast loaded UHPFRC panels with optimized mixture design using advanced material models

• DOI: 10.1016/j.rineng.2024.102518
• Publication Date: 2024-07-05T07:41:14Z
• Authors: Mohammad Momeni; Demetris Demetriou; Loucas Papadakis; Chiara Bedon; Michael F. Petrou; Demetris Nicolaides
• Keywords: Fiber Reinforced Concrete

The increasing use of innovative materials in blast- and impact-resistant structures underscores the demand for robust simulation design methods. Concrete, especially Ultra High Performance Fiber Reinforced Concrete (UHPFRC), has emerged as a key player this domain. present study delves into damage investigation dynamic response assessment blast loaded UHPFRC panels with optimized mixture (microsilica content, water curing conditions, fibre proportions). so-assembled material is calibrated validated, adjusting parameters from experimental results addressing tensile compressive behaviours based on standard navigates through numerical challenges, emphasizing limitations applying available models to UHPFRC, necessitates recalibration optimal alignment results. An in-depth analysis using LS-DYNA software also carried out, aiming understand behaviour under loading performing comparative between normal strength concrete (NSC) without reinforcement, superior performance UHPFRC. Furthermore, addresses importance determining minimum thickness protective barriers. This involves specific strategy regulations considering minimal panel, leading proposal an empirical formulation. Additionally, sensitivity been conducted identify influential panel. findings revealed that modelling finite element employing advanced yield promising outcomes. Moreover, proposed formulation demonstrates good level accuracy efficiency predicting conditions. indicate explosive charge weight, standoff distance, panel are most critical parameters. These insights contribute comprehensive understanding offering valuable considerations future applications implementations evolving field.