Effective Medium Theory for the Elastic Properties of Composites and Acoustics Applications

Abstract

We derive an effective medium theory that predicts the bulk and shear moduli of composite materials consisting of a matrix material with soft or hard ellipsoidal inclusions. The theory predicts that disk-shaped inclusions are most effective for softening or hardening a composite material. The theory is applied to the design of materials with highly absorptive acoustical properties.

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Document Details

Document Type
Technical Report
Publication Date
Mar 03, 1992
Accession Number
ADA248705

Entities

People

  • P. J. Steinhardt

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acoustic Absorption
  • Acoustic Propagation
  • Acoustic Reflection
  • Acoustic Waves
  • Acoustics
  • Aspect Ratio
  • Bulk Modulus
  • Composite Materials
  • Dielectrics
  • Elastic Properties
  • Hardening
  • Materials
  • Military Research
  • Secondary Waves
  • Shear Modulus
  • Softening
  • Sound Waves

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials