Journal of Theoretical
and Applied Mechanics

37, 4, pp. 799-807, Warsaw 1999

A contribution to dynamics of polyatomic lattices

Jowita Rychlewska, Jolanta Szymczyk, Czesław Woźniak
Using the concept of internal degrees of freedom a new finite difference formulation of polyatomic lattice dynamics is proposed. A transition from the nonlocal equations of motion to the partly local and local ones as well as the possibility of reduction of internal degrees of freedom are shown.
Keywords: lattice dynamics; continuum models