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Shrinkage stresses around rigid inclusions

Investigation indicates that stress field obtained corresponds to the thermal-stress field produced by a difference in the coefficients of thermal expansion of the matrix and the inclusion material

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Abstract

The objective of this paper is the presentation of methods to study shrinkage stresses in matrices cast around rigid inclusions. The method of casting plastic specimens around glass inclusions and analyzing the resulting isochromatic fringe patterns is briefly discussed. An alternate method for the study of the relative or dimensionless stress distribution using rubber models with inserted inclusions is also, presented. A partial solution to the stress distribution between two inclusions was obtained. The generality of the method and its applicability to any matrix material are emphasized.

It is pointed out that the stress field obtained corresponds to the thermal-stress field produced by a difference in the coefficients of thermal expansion of the matrix and the inclusion material.

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References

  1. “Resin Shrinkage Pressure During Cure,” MCA-MIT Plastics Research Project, Progress Report, Jan. 15, 1959.

  2. Daniel, I. M., and Durelli, A. J., “Photoelastic Investigation of Residual Stresses in Glass-Plastic Composites,” Section 19A, 16th Annual Conference of Reinforced Plastic Division, The Society of the Plastics Industry, Chicago, Ill.

  3. Coker, E. G., andFilon, L. N. G., A Treatise on Photoelasticity, Cambridge University Press, London, 2nd ed., 501–524 (1957).

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  4. Durelli, A. J., Phillips, E. A., and Tsao, C. H., “Introduction to the Theoretical and Experimental Analysis of Stress and Strain.” McGraw-Hill, 305 ff (1958).

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Authors and Affiliations

  1. Armour Research Foundation, Chicago, Ill

    I. M. Daniel (Associate Research Engineer)

  2. Catholic University of America, Washington, D. C.

    A. J. Durelli (Professor of Civil Engineering)

Authors
  1. I. M. Daniel
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  2. A. J. Durelli
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Daniel, I.M., Durelli, A.J. Shrinkage stresses around rigid inclusions. Experimental Mechanics 2, 240–244 (1962). https://doi.org/10.1007/BF02326722

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  • DOI: https://doi.org/10.1007/BF02326722

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