Accession Number : ADA293941

Title :   Effects of Case Thickness on the Performance of Underwater Mines,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Jones, D. A. ; Northeast, E. D.

PDF Url : ADA293941

Report Date : JAN 1995

Pagination or Media Count : 33

Abstract : The effect of case thickness on the performance of underwater mines was investigated both experimentally and computationally using 10 kg charges of H6. The charges were cylindrical in shape and surrounded by either 6 mm or 12 mm thick steel casing. Two bare charges were also fired. Analysis of the experimental pressure transducer records showed that casing thickness had no effect on peak pressure in the far field, but resulted in a 5% increase in shock wave energy compared with an uncased charge. Numerical simulations using both the SIN and DYNA2D codes supported these experimental results. Measurements of the bubble period indicated that the bubble energy for a cased charge was 9% lower than that of an uncased charge. (MM)

Descriptors :   *UNDERWATER EXPLOSIONS, *UNDERWATER MINES, *MINE CASES, MATHEMATICAL MODELS, THICKNESS, PRESSURE TRANSDUCERS, SHOCK WAVES, EXPLOSIVE CHARGES, STEEL, BUBBLES, HIGH EXPLOSIVES, CASE HARDENING.

Subject Categories : Underwater Ordnance
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE