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Title: Impact modeling with Smooth Particle Hydrodynamics

Smooth Particle Hydrodynamics (SPH) can be used to model hypervelocity impact phenomena via the addition of a strength of materials treatment. SPH is the only technique that can model such problems efficiently due to the combination of 3-dimensional geometry, large translations of material, large deformations, and large void fractions for most problems of interest. This makes SPH an ideal candidate for modeling of asteroid impact, spacecraft shield modeling, and planetary accretion. In this paper we describe the derivation of the strength equations in SPH, show several basic code tests, and present several impact test cases with experimental comparisons.
Authors:
;
Publication Date:
OSTI Identifier:
10167195
Report Number(s):
LA-UR--93-2256; CONF-9307102--1
ON: DE93016561
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Smooth particle hydrodynamics in astrophysics OAT workshop,Trieste (Italy),6 Jul 1993; Other Information: PBD: [1993]
Research Org:
Los Alamos National Lab., NM (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; IMPACT SHOCK; MATHEMATICAL MODELS; HYDRODYNAMICS; VOID FRACTION; DEFORMATION; THREE-DIMENSIONAL CALCULATIONS; IMPACT TESTS; SHIELDING; ASTEROIDS; LAGRANGIAN FUNCTION; COMPUTER CALCULATIONS 661300; 990200; OTHER ASPECTS OF PHYSICAL SCIENCE; MATHEMATICS AND COMPUTERS