Stress concentration factors are presented for circular holes in circular composite plates of cylindrical orthotropy when the outer edge of the plate is subjected to uniform uniaxial traction. The values that can be calculated from the formulas presented and the values shown in the diagrams are valid rigorously only for the circular plate but they can be used as approximation for differently shaped (for instance, rectangular) finite plates also.
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References
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Hoff, N.J., "Stress Concentrations in Cylindrically Orthotropic Composite Plates With a Circular Hole," Journal of Applied Mechanics, Vol. 48, No. 3, p. 563, September 1981.
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Howland, R.C.J. , and A.C. Stevenson, "Bi-Harmonic Analysis in a Perforated Strip," Phil. Trans. Roy. Soc. London, Vol. 232A, p. 155, 1933.
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Hong, C.S., and J.H. Crews, Jr., "Stress Concentration Factors for Finite Orthotropic Laminates With a Circular Hole and Uniaxial Loading," NASA Technical Paper 1469, May 1979.
