Anti-explosion Design Method for Aluminum Alloy Doors in Ordinary Buildings

The door is a primary target for an explosive attack. The design of special building structure and its blast-resistant door has been reported in the previous literature. However, there is little about the failure analysis and design method for the anti-explosion property of aluminum alloy doors in ordinary buildings. Aiming at the problem of anti-explosion property of aluminum alloy doors in ordinary buildings, plastic deformation was used as the failure model, and a method to improve the anti-explosion property by controlling the external conditions was developed in this study. Based on dimensionless analysis and finite element simulation, the dynamic responses of aluminum alloy doors under blast load were compared with the experimental data, and the correctness of the model was verified. The prediction model for anti-explosion property of aluminum alloy doors was established, which provided a scientific basis to prevent the failure of aluminum alloy doors with different sizes and thicknesses. The critical amount of explosive charge to aluminum alloy doors with different explosion distances or thicknesses was obtained according to the quantitative results. The use of polyurea coating greatly improved the anti-explosion property of the door.