A MODIFIED DIRECT METHOD FOR THE CALCULATION OF ELASTIC MODULI OF COMPOSITE MATERIALS

The modified direct method is a scheme for the estimation of elastic moduli of composite materials and is based on micromechanical theory and classical elasticity. Using the statistical homogeneous assumption and the two-phase composite approach, one takes the average field of the composite. Due to the complexity of composite materials, the modeling parameters for the exact analytical theory are not always available and the effective bounds are usually too wide for practical application. For engineering purposes a more practical and general model is desired. The modified direct method was developed to approach the above requirements. In this work, the modified direct method is compared with different available experimental data and methods, for example, Kuster-Toksoz, and Christensen-Lo. The comparison results show that the modified direct method provides a very good estimation of the elastic moduli in different kinds of problems, such as the soft and hard inclusion cases, porous materials, at various concentrations and/or various porosities.

  • Corporate Authors:

    University of Arizona, Tucson

    Department of Civil Engineering and Engineering Mechanics
    1209 E 2nd Street
    Tucson, AZ  United States  85721-0072
  • Authors:
    • Wang, J A
    • Lubliner, J
    • Monteiro, PJM
  • Conference:
  • Publication Date: 1996-1

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 80-94

Subject/Index Terms

Filing Info

  • Accession Number: 00762455
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 8 1999 12:00AM