Three Dimensional Simulation of Stress Around Inclusion in Viscoelastic Fluids

Abstract

A finite element numerical model is presented which simulates vibrations in and around inclusions in viscoelastic fluids excited by a sinusoidal pressure wave or pulse generated by noisy machinery. Stress transfer processes are investigated and regions of highest energy dissipation identified. The model simulates the time evolution of stress generation in and around inclusions in the viscoelastic plastic fluid in three space dimensions. Fluid composites recommended for their power dissipative characteristics are ranked according to their ability to dissipate acoustic power in a simple composite structure

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA283860

Entities

People

  • B. Wendlandt

Organizations

  • Defence Science and Technology Group

Tags

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Properties
  • Acoustic Waves
  • Composite Materials
  • Dissipation
  • Elastomers
  • Excitation
  • Frequency
  • Materials
  • Physical Properties
  • Plastic Properties
  • Relaxation Time
  • Shear Modulus
  • Shear Stresses
  • Simulations
  • Three Dimensional
  • Waves

Fields of Study

  • Engineering

Readers

  • Acoustics.
  • Computational Modeling and Simulation
  • Structural Dynamics.

Technology Areas

  • Space