Abstract

A generalized continuum model for diatomic solids is presented in this study. Considering the relative displacement of a particle in a cell as a single director, the field and the constitutive equations of diatomic solids are obtained through the use of Toupin's [3] variational principle. Propagation of a longitudinal wave in such a medium is also reported, and the result found here is compared with those of lattice dynamics.

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