Page 323 - Introduction to Continuum Mechanics
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Engineering Constants for Isotropic Elastic Solids. 307
where
The elements Cy are related to the Lames constants A and p as follows
5.28 Engineering Constants for Isotropic Elastic Solids.
Since the stiffness matrix is positive definite, the stress-strain law given in Eq. (5.27.1) can
be inverted to give the strain components in terms of the stress components. They can be
written in the following form