Smoothed Particle Hydrodynamics Simulation of Disk-Shaped Penetrator Impact,

Abstract

Smoothed particle hydrodynamics (SPH) is a method of continuum mechanics analysis in which materials are modeled by a discrete set of particles. The SPH code Magi has been used to simulate the penetration of a semi-infinite steel target by tungsten alloy disks traveling at an initial impact velocity of 2 km/s. Calculations were performed to simulate experimental configurations using one, two, and four disks. All disks had a constant length-to-diameter ratio of 0.125. The computed penetration depth into the target material is compared to the experimental data for each case. The study included a set of calculations in which the problem resolution was varied to determine the ability of the method to converge on a penetration depth as the number of particles in the problem was increased. Advantages and limitations observed in the application of SPH to the field of penetration mechanics are discussed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1998
Accession Number
ADA354109

Entities

People

  • Kent D. Kimsey
  • Stephen J. Schraml

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Computational Science
  • Computer Programs
  • Engineering
  • Equations
  • Experimental Data
  • Geometry
  • Materials
  • Mechanics
  • Military Research
  • Particle Size
  • Shape
  • Simulations
  • Structural Mechanics
  • Three Dimensional
  • Tungsten Alloys
  • Two Dimensional
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Mechanical Engineering/Mechanics of Materials.