Accession Number : AD0775256

Title :   Explosive Loading of a Deformable Underwater Structure.

Descriptive Note : Final rept.,


Personal Author(s) : Collins,Richard

Report Date : JAN 1974

Pagination or Media Count : 105

Abstract : The full HEMP numerical code, modified to permit an enlarged memory, has been used on the CDC 7600 computer to calculate the complete field solution for the loading of submerged thin shell structures, of cylindrical and spherical geometries, due to a nearby intense underwater explosion. No exact theoretical solution exists for the propagation of strong nonlinear waves past such deformable structures. However, the acoustic case has been solved analytically by Mnev and Pertsev (1971), providing a direct comparison with supplementary calculations with the HEMP code for an acoustic wave emanating from a weak explosion. Agreement with the acoustic solution is quite satisfactory. The particular application described in this work to nonlinear fluid-shell interaction problems holds the promise of significant advances in structural design which have heretofore been limited to loading levels corresponding to weak explosive waves in the linear acoustic range. (Author)

Descriptors :   *Underwater structures, *Underwater explosions, Shells(Structural forms), Structural response, Detonation waves, Stress strain relations, Computerized simulation, Explosion effects, Finite difference theory

Subject Categories : Structural Engineering and Building Technology
      Underwater Ordnance

Distribution Statement : APPROVED FOR PUBLIC RELEASE