| Abstract: | This paper deals with the regularities of the influence of the variation of the elastic-dissipative coupling parameters of
subsystems on the formation of resonant vibrations of systems with a violated cyclic symmetry, like shrouded blade assemblies,
and gives the results of numerical calculations. The formation of the amplitude-frequency characteristics and the distribution
of resonant vibration amplitudes of the systems under study is shown to depend on the relationship between elastic and dissipative
characteristics of coupling of the subsystems. When the elastic coupling is stiff, which provides localization of vibrations
of the elastically-coupled system, the introduction of dissipative coupling does not cause any changes in the behavior of
the amplitude-frequency characteristics, and the degree of localization is almost independent of the dissipative properties
of the coupling. As the stiffness of the elastic-dissipative coupling grows, the localization of vibrations shows up only
at certain values of the dissipative characteristics of the coupling.
Institute for Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine. Translated from Problemy Prochnosti,
No. 1, pp. 102–115, January–February, 1999. |
