| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to the field of screening and may be used in structures exposed to pulse loads of high intensity. The device comprises an explosion-proof screen damaged under action of external pulse load, a base fixed rigidly with the help of stands on the body of the protected structure. The screen is installed on the base at the side of direction of external pulse action with the help of fixation elements, which are chosen with the condition of their damage at the moment of impact of the external load at the screen. The surface of the protected structure between stands at the side of action of the outer load is equipped with a damping coating made of hardened polyurethane foam applied by means of foaming directly onto the protected structure. Thickness and density of the coating are determined on the basis of provision of protected structure strength determined by calculation of its dynamic model.EFFECT: possibility to ensure high level of protection under minimum size and mass limitations at a structure.1 dwg |
