Accession Number : ADA309979

Title :   A Scalable Software Plan for the Undersea Warheads' Modeling and Simulation Program.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC CENTER FOR COMPUTATIONAL PHYSICS DEVELOPMENT S

Personal Author(s) : Emery, Mark H.

PDF Url : ADA309979

Report Date : 03 JUN 1996

Pagination or Media Count : 14

Abstract : The Department of Defense has embarked on an underwater explosion project to couple underwater explosion hydrodynamics with new capabilities in large deformation structural mechanics. In a related effort, DoD has recognized the urgent need of a self-consistent numerical capability for modeling explosion and shock effects in surf zone seafloor sediments with seawater and free air pore fluid, to accelerate the progress of performance prediction of mine countermeasure efforts and for modeling the response of geometrically complex structures buried in sand or soil under blast and shock loads. This report summarizes a research plan which involves the development and implementation of a scalable, fully coupled fluid structure interaction model for simulating the response of geometrically complex structures subjected to unsteady blast and bubble loads stemming from explosions in deep ocean and the surf zone. This multilevel, multiyear plan will couple a scalable, finite difference hydrodynamics code for modeling the generation and evolution of propagating explosive blast waves in a medium (water, partially or fully saturated sand, 'dry' soils, and sands) to a scalable, finite-element structural mechanics code for modeling the response of complex, multidimensional structures to the loads and stresses stemming from the medium.

Descriptors :   *COMPUTER PROGRAMS, *COMPUTERIZED SIMULATION, *STRUCTURAL MECHANICS, *HYDRODYNAMIC CODES, *UNDERWATER EXPLOSIONS, *UNDERWATER ORDNANCE, STRESSES, SOFTWARE ENGINEERING, WATER, FINITE ELEMENT ANALYSIS, DEFORMATION, MINE COUNTERMEASURES, NUMERICAL ANALYSIS, BLAST WAVES, PARALLEL PROCESSING, SAND, COMPUTATIONAL FLUID DYNAMICS, EXPLOSIVES, SATURATION, COSTS, CODING, FINITE DIFFERENCE THEORY, SOILS, WAVE PROPAGATION, GEOMETRIC FORMS, SHOCK, SCALING FACTOR, RESEARCH MANAGEMENT, DRY MATERIALS, SEA WATER, SEDIMENTS, OCEAN BOTTOM, DEEP OCEANS, SURF, WARHEADS.

Subject Categories : Computer Programming and Software
      Underwater Ordnance

Distribution Statement : APPROVED FOR PUBLIC RELEASE