This study investigated the linear and nonlinear dynamic responses of three cylindrical shell structures subjected to underwater small charge explosions in a 4 m times 4 m times 4 m water tank. The dimensions of the cylindrical shell structures were 90 cm times 30 cm times 1 mm (length times diameter times thickness). Both ends of the cylindrical shell were mounted with thick plates to provide support and create an enclosed space. The three cylindrical shell structures were un-stiffened, internally stiffened and externally stiffened, respectively. The experiments involving the dynamic response of cylinders subjected to UNDEX (underwater explosion) were performed under different standoff distances, varying from 210 to 35 cm. A small quantity of explosives was used to generate the shock loading. The plastic deformation of the cylindrical shell was observed at a standoff distance of less than 50 cm. Other conditions were tested to examine cylinder linear response. Dynamic analyses were performed for the experimental model using FEM(Finite lement Method) and compared with the test results. The accelerations and dynamic strains of cylindrical shells obtained from the experiment were compared with those obtained by FE(Finite Element) analysis. Finally, problems related to small-scale UNDEX experiments performed in small water tanks were analyzed.
Dynamic response of cylindrical shell structures subjected to underwater explosion
Dynamisches Verhalten von einer Unterwasserexplosion ausgesetzten zylindrischen Schalenstrukturen
Ocean Engineering ; 36 , 8 ; 564-577
2009
14 Seiten, 25 Quellen
Article (Journal)
English
DYNAMIC BEHAVIOUR OF RING STIFFENED CYLINDRICAL STRUCTURE SUBJECTED TO UNDERWATER EXPLOSION
British Library Conference Proceedings | 2011
|Taylor & Francis Verlag | 2020
|SURFACE SHIP SHOCK SIMULATION SUBJECTED TO UNDERWATER EXPLOSION
British Library Conference Proceedings | 2000
|Performance evaluation of HSLA steel subjected to underwater explosion
Tema Archive | 2001
|