IMPULSIVE COLLAPSE OF LIQUID-FILLED CYLINDRICAL STEEL SHELLS

The paper reports the results of an experimental investigation of impu lsive collapse of steel pipelines (filled with water or air) by an imp act from two opposite sides by two massive plates accelerated simultan eously towards each other by an explosive charge. The experimental res ults confirmed that the proposed method of closing the walls of variou s standard-size pipelines filled with a liquid or gas is promising. Th e numerical results of a three-dimensional modeling of the dynamic col lapse of tubes impacted by accelerated plates are presented. Some feat ures of the Euler calculation technique for elastoplastic flows as app lied to the description of processes occurring in devices for emergenc y sh ut-down of liquid-filled steel pipelines are considered.