Development of a Mixture for Nonlinear Wave Propagation in Fiber- Reinforced Composites.

Abstract

A method for constructing dispersive, nonlinear mixture models for unidirectionally fiber-reinforced composites is described herein. System nonlinearities in the treated example result from nonlinear material properties of the constituents. The proposed model is a nonlinear generalization of the linear model developed by Murakami and Hegemier (1986) for elastic constituents. Model construction is based upon a homogenization technique which employs multivariable asymptotic expansions in conjunction with certain weighted residual procedures. The methodology furnishes the equations of motion, the appropriate initial and boundary conditions, and a set of consistent rate constitutive relations. Model validation for linear and non linear dynamic responses is accomplished by comparing predicted results for waveguide and wave- reflect problems with the available experimental data or the data obtained by use of a detailed finite element (FE) analysis.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1991
Accession Number
ADA237471

Entities

People

  • Gilbert A. Hegemier
  • Hidenori Murakami
  • T. J. Impelluso

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Asymptotic Series
  • Boundary Value Problems
  • Composite Materials
  • Computational Science
  • Dynamic Response
  • Elastic Properties
  • Electrical Solitons
  • Equations Of Motion
  • Experimental Data
  • Fiber Reinforced Composites
  • Materials
  • Mechanics
  • Military Research
  • Two Dimensional
  • Universities
  • Wave Propagation
  • Waveguides

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Computational Modeling and Simulation
  • Reinforced Composite Materials