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Journal of Structural Chemistry

2016 year, number 5

Harmonic Force Field of a System of Bound Atoms

O.A. Ivashkevich, V.E. Matulis, Yu.E. Nagornyi, V.I. Repchenkov
Belorusian State University, Minsk, Republic of Belarus
Keywords: квадратичное силовое поле, условия равновесия, структура матрицы силовых постоянных, quadratic force field, equilibrium conditions, structure of the force constant matrix

Abstract

On the example of a simple mechanical model (a linear chain of three bound atoms) it is shown that the equilibrium conditions of forces and force moments completely determine the linearly elastic properties of the structure and make it possible to find the number of free parameters of the quadratic force field.