Response of Materials Subjected to Magnetic Fields

Abstract

This research program examined the interaction of conducting materials with magnetic fields through a series of experiments, the development of analytical models and the development and testing of numerical models. The experiments were a series of drop tests of conducting spheres through strong magnetic field gradients and were used for the development and validation of the analytical and numerical models under low speed conditions. Large decelerations were measured and shown to agree with predictions. These codes were then extended to higher speed conditions and used to examine magnetic compression and the generation of stresses in the high speed materials. Comparisons with the ALEGRA code were made. Scaling models were proposed for high speed interactions where the penetration of the magnetic field into the material is very small during the interaction time. Applications of the magnetic induced stress were explored for changing the impact characteristics of high speed objects against a protective shield, improving survivability.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 2011
Accession Number
ADA549089

Entities

People

  • Richard B. Miles

Organizations

  • Princeton University

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Conductivity
  • Crystal Lattices
  • Cubic Lattices
  • Eddy Currents
  • Electrical Conductivity
  • Geometry
  • Magnetic Fields
  • Magnetic Flux
  • Materials
  • Plastic Deformation
  • Reynolds Number
  • Shielding
  • Simulations
  • Space Debris
  • Three Dimensional
  • Two Dimensional

Readers

  • Computational Fluid Dynamics (CFD)
  • Mechanical Engineering/Mechanics of Materials.
  • Plasma Physics / Magnetohydrodynamics