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Extension of classical experimental techniques for characterizing composite-material behavior

The experimental-analytical method described in this paper is shown to yield material descriptions from specimen shapes previously considered intractable

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Abstract

A finite-element-based experimental technique is presented for determining the anisotropic behavior of composite materials from a broad class of experimental specimens. A brief review of the mathematical formulation precedes the discussion of three experiments which constitute a laboratory verification of the experimental technique. The class of specimens under consideration in this paper includes both flat sheets in plane stress and thin shells subjected to combined membrane and bending deformations.

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References

  1. Kavanagh, K. T., “Finite Element Applications in the Characterization of Elastic Solids,” International Journal of Solids and Structures, to be published (1970).

  2. Kavanagh, K. T., “Experiment vs. Analysis: Computational Techniques in the Description of Static Material Response,” submitted to International Journal of Solids and Structures (Sept. 1970).

  3. Kavanagh, K. T., “The Finite-element Method as a Basis for Determining the Mechanical Behavior of Solids,” presented at SESA Conference, Third Annual Solid Mechanics Symposium on Finite-element Methods in Solid Mechanics, Colorado Springs (May 8, 1970).

  4. Sprang, H. A., “A Review of Minimization Techniques for Nonlinear Functions,” SIAM Review,4 (4) (Oct. 1962).

  5. Goldfarb, D., “Extension of Davidon's Variable Metric Method to Minimization Under Linear Inequality Constraints,” SIAM Journal of Applied Mathematics,17 (4) (July 1969).

  6. Key, S. W., “The Analysis of Thin Shells with a Doubly Curved Arbitrary Quadrilateral Finite Element,” presented at the Conference on Computer Oriented Analysis of Shell Structures, August, 1970, Lockheed Palo Alto Research Laboratory, Palo Alto, Calif.

  7. Chavez, D., Sandia Laboratories, Albuquerque, New Mexico, Private Communication (Sept. 1970).

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Authors and Affiliations

  1. Sandia Laboratories, 87115, Albuquerque, New Mexico

    Kenneth T. Kavanagh (Member of Research Staff)

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  1. Kenneth T. Kavanagh
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This work was supported by the United States Atomic Energy Commission.

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Kavanagh, K.T. Extension of classical experimental techniques for characterizing composite-material behavior. Experimental Mechanics 12, 50–56 (1972). https://doi.org/10.1007/BF02320791

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  • DOI: https://doi.org/10.1007/BF02320791

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