The mono-periodic PPN can effectively suppress the amplitude magnification of the forced response induced by the mistuning of the blisk meanwhile, it can mitigate the vibration localization of the mistuned electromechanical system. The mechanical coupling between the blades and the disk plays an important role in the damping effect of the PPN, and it should be paid attention to in applications. The research results turn out that the PPN will only affect mechanical frequencies near the electrical frequency clusters slightly, and the bi-periodic PPN will make the nodal diameter spectrum of the modes more complex, but the amplitude corresponding to the new nodal diameter component is much smaller than that of the nodal diameter component corresponding to the mono-periodic system. The vibration suppression performance of both kinds of PPN has been studied through modal analysis, forced response analysis, and statistical analysis. The former has a piezoelectric patch in each sector, and the later has one patch every few sectors. Two kinds of PPN are considered, namely mono-periodic PPN and bi-periodic PPN. The PPN is constructed by parallelly interconnecting the piezoelectric patches distributed in the blisk. The work aims to provide a further investigation of the dynamic characteristics of an integral bladed disk (also called ‘blisk’) with a Parallel Piezoelectric Network (PPN).
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