Modeling the Behavior of Modular Reinforced Concrete Shelters Under Explosion Conditions

Abstract The purpose of the work is to study the safe operation of modular reinforced concrete shelters under explosion conditions to ensure the safety of people inside while protecting them from the effects of air strikes. The scientific novelty is reduced to a comprehensive analysis and generalization of previous studies on the assessment of the effects of excess pressure from the explosion of military weapons, methods of mathematical modeling based on the method of integrating dynamics equations and stress-strain equations of a solid body when they are approximated by the finite element method in a nonlinear formulation. Practical value - the results of the research proved that ground-based modular shelters are safe in their practical use for protecting the population from the effects of explosions during air strikes, as well as penetrating ionizing radiation. Main results - the results of the analysis of the structural systems of modular shelters substantiated the main provisions and assumptions of the computational-theoretical approach to mathematical modeling of the impact of an explosion on reinforced concrete structures of modular shelters. Calculation schemes and a set of mathematical models of mechanical interaction between elements of protective shelters, structural materials, as well as models of the mechanical impact of an explosion on shelter elements have been developed. Based on the mathematical modeling a conclusion about the safety of modular shelters and their practical application for protection against explosions and penetrating ionizing radiation has been made.