2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/18581Bushes of normal modes represent exact mathematical objects describing specific dynamical regimes in nonlinear mechanical systems with point or space symmetry. In the present paper, we outline the bush theory and illustrate it with some bushes of small dimensions in octahedral mechanical structures.LaTeX, 9 pages, to be published in Proceedings of XXIX Summer School "Advanced Problems in Mechanics" Russia, St.Petersburg (Repino), June 21-30, 2001Condensed Mattertext