Investigation of the influence of the dynamic system parameters on its frequency and modal spectrums

Abstract

Abstract The influence of parameters of dynamic system on its frequency and modal spectra is investigated by the example of chain unbranched dynamic system with finite number of degrees of freedom. The general regularities between the parameters of the chain dynamic system and its frequency and modal spectra are determined. It is established that according to the own spectrum of the chain dynamic system the inflated estimation of the interval width of eigenfrequency change at variation of any parameter may be given. The criterion, allowing to determine the structural parameters of the system, which significantly affect the given natural frequencies, is obtained.