A modified direct method for the calculation of elastic moduli of composite materials

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Description

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 then 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 ... continued below

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16 p.

Creation Information

Wang, J.A.; Lubliner, J. & Monteiro, P.J.M. February 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Wang, J.A. Oak Ridge National Lab., TN (United States). Computational Physics and Engineering Div.
  • Lubliner, J.
  • Monteiro, P.J.M. Univ. of California, Berkeley, CA (United States). Dept. of Civil Engineering

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Description

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 then 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 experiment data and methods, for example, Kuster-Toksoez, 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.

Physical Description

16 p.

Notes

OSTI as DE96005440

Source

  • 1. international conference on composites in infrastructure, Tucson, AZ (United States), 15-17 Jan 1996

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  • Other: DE96005440
  • Report No.: CONF-960161--1
  • Grant Number: AC05-84OR21400
  • DOI: 10.2172/201789 | External Link
  • Office of Scientific & Technical Information Report Number: 201789
  • Archival Resource Key: ark:/67531/metadc664865

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Creation Date

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • April 7, 2016, 8:21 p.m.

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Wang, J.A.; Lubliner, J. & Monteiro, P.J.M. A modified direct method for the calculation of elastic moduli of composite materials, report, February 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc664865/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.