The elastic coefficients for an arbitrary rectangular coordinate system are calculated as a function of direction cosines in the crystal. Young's modulus, shear modulus, and Poisson's ratio are defined in general and values tabulated for some of the more important directions in the crystal. Graphs of these moduli are also plotted as a function of crystal direction for orientations in the (100) and (110) planes as well as planes determined by the [110] direction and any perpendicular direction.
REFERENCES
1.
2.
3.
See J. F. Nye’s Physical Properties of Crystals (Oxford University Press, London, 1957).
4.
W. P. Mason, Physical Acoustics and the Properties of Solids (D. Van Nostrand Company, Inc., Princeton, New Jersey, 1958).
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© 1965 The American Institute of Physics.
1965
The American Institute of Physics
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