Elastic Constants
Elastic constants determined from dispersion curves.
_ _ K or _ _ M:
- c11 = _ vL2
- _ ( c11 - c12 ) = _ vT12
- c44 = _ vT22
_ _ A:
- c33 = _ vL2
- c44 = _ vT12 = _ vT22
_ _ 45o between K and A:
- _ (c11 + c22 + 2c44 ) ± [ _ (c11 - c33 )2 + ( c13 + c44 )2 ]_ = 2_ vT12 = 2_ vT22