Investigation of nonlinear oscillations of high rise flue gas stacks under various kinematic effects

A detailed analysis of the current state problem is presented in article. mathematical model given to assess dynamic behavior high-rise structures, considering geometric nonlinearity (nonlinear dependence strains on displacements) under periodic kinematic effects and own weight structure. The unsteady forced oscillations flue gas stack Novo-Angrenskaya HPP were studied dimensions physical mechanical characteristics material influence dissipation material, leading rapid or gradual damping vibrations depending frequency spectrum natural one direction another, as well nonlinearity, an increase amplitude at a low energy structure, resonant impact, causing significant displacements predominant effect pattern structure observed compared nonlinearity.