Accession Number : ADA262798


Title :   High Strain Lagrangian Hydrodynamics: A Three Dimensional SPH Code for Dynamic Material Response


Descriptive Note : Final rept. Oct 1991-Sep 1992


Corporate Author : PHILLIPS LAB KIRTLAND AFB NM


Personal Author(s) : Allahdadi, Firooz A ; Carney, Theodore C ; Hipp, Jim R ; Libersky, Larry D ; Petschek, Albert G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262798.pdf


Report Date : Mar 1993


Pagination or Media Count : 22


Abstract : MAGI, a three-dimensional shock and material response code which is based on Smoothed Particle Hydrodynamics is described. Calculations are presented and compared with experimental results. The SPH method is unique in that it employs no spatial mesh. The absence of a grid leads to some nice features such as the ability to handle large distortions in a pure Lagrangian frame and a natural treatment of voids. Both of these features are important in the tracking of debris clouds produced by hypervelocity impact, a difficult problem for which Smoothed Particle Hydrodynamics seems ideally suited. It is believed this is the first application of SPH to the dynamics of elastic-plastic solid.


Descriptors :   *STRAIN(MECHANICS) , *HYDRODYNAMICS , *LAGRANGIAN FUNCTIONS , STRESS STRAIN RELATIONS , COMPUTER PROGRAMS , SIMULATION , VOIDS , PARTICLES , INTERPOLATION , FLUID DYNAMICS , COLLISIONS , VISCOSITY , EULER EQUATIONS , SHOCK , THREE DIMENSIONAL , DEBRIS , HYPERVELOCITY IMPACT , DEFORMATION


Subject Categories : Numerical Mathematics
      Fluid Mechanics
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE