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Photoelastic analysis of an orthotropic plate on a nonlinear foundation

The techniques and results of stress freezing an orthotropic plate on a continuous, nonlinear foundation are presented in this pape

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Abstract

Frozen-stress techniques were used to analyze an orthotropic plate on a continuous, nonlinear foundation. A long-range objective of the investigation was to provide experimental results to compare with a future finite-element analysis of the same type problem. Data were presented to illustrate principal stress magnitudes and directions. Close agreement of a static equilibrium check of the nonlinear foundation with the applied load experimentally verified the procedure used for calculation of external pressure on the model-foundation interface.

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Abbreviations

c′ :

calibration constant, psi/fringe/in.

p :

pressure at model-foundation interface, psi

t :

slice thickness, in.

N :

fringe order

δ:

deflection of foundation, in.

δ e :

elastic deflection of model, in.

δ rb :

“rigid body” displacement of model, in.

σ i :

principal stress, psi:i=1,2,3

σ t :

principal stress in fillets of model, psi

σ z :

externally applied principal stress, psi

References

  1. Chilver, A. H., Thin-Walled Structures, Part II, Ch. 5, John Wiley & Sons, Inc., New York (1967).

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  2. Durelli, A. J. andRiley, W. F., Introduction to Photomechanics, Ch. 3, Prentice-Hall, Inc., New Jersey (1965).

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  3. Fenwick, W. B., “Evaluation of Harvey Modified AM2 Landing Mat,” U. S. Army Engineer Waterways Experiment Station Misc. Paper No. 4-747 (October, 1965).

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Authors and Affiliations

  1. Dept. of Ocean Engineering, Florida Atlantic University, Boca Raton, Fla.

    R. O. Case (Assistant Professor of Ocean Engineering)

  2. Dept. of Mechanical Systems Engineering, University of Alabama, University, Ala.

    S. C. Gambrell (Associate Professor of Engineering Mechanics)

Authors
  1. R. O. Case
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  2. S. C. Gambrell
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Case, R.O., Gambrell, S.C. Photoelastic analysis of an orthotropic plate on a nonlinear foundation. Experimental Mechanics 9, 481–488 (1969). https://doi.org/10.1007/BF02319691

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  • DOI: https://doi.org/10.1007/BF02319691

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