Impulsive collapse of liquid-filled cylindrical steel shells

The paper reports the results of an experimental investigation of impulsive collapse of steel pipelines (filled with water or air) by an impact from two opposite sides by two massive plates accelerated simultaneously towards each other by an explosive charge. The experimental results confirmed that the proposed method of closing the walls of various standard-size pipelines filled with a liquid or gas is promising. The numerical results of a three-dimensional modeling of the dynamic collapse of tubes impacted by accelerated plates are presented. Some features of the Euler calculation technique for elastoplastic flows as applied to the description of processes occurring in devices for emergency shut-down of liquid-filled steel pipelines are considered.