Evaluating the effectiveness of reducing explosion pressure for underground structures by using shields made of porous materials

Abstract

Materials with a porous structure are widely used to absorb the impact of dynamic loads through the deformation process of the internal structure of the material. The problem is to evaluate the effectiveness of this type of material in reducing pressure from explosion events on structures. The paper presents the structure and the principle of blast energy absorption of materials with a porous structure (foam materials) and experiments to determine the mechanical characteristics and behavior of foam materials. Numerical simulations are then used to assess the energy absorption efficiency of shields made of materials with a porous structure to mitigate the effects of explosion pressure and apply them to underground structures placed in soil. The results suggest further research on the material structure, impact absorption mechanism and application solutions when using this material.

Keywords: Foam materials; explosion pressure; absorption; vibration; stress.