A numerical and experimental study on optimal design of multi-DOF viscoelastic supports for passive vibration control in rotating machinery

Optimal design of multi-DOF viscoelastic dynamic neutralizers for passive vibration control in rotordynamics

“…where the VDN is represented through its GEP of equivalent stiffness. The hypothesis of isotropic stiffness and linear viscoelasticity is used for the VDN, as proposed in [14].…”

“…The combination of viscoelastic materials with different properties proved to be more efficient in passive vibration control-for a large frequency range-than the use of a single set of those materials, according to [14]. However, to properly test the detuning mitigation approach influence in the performance of the passive vibration control, a single material configuration is preferred.…”

“…"Although the viscoelastic model allows frequency and temperature variations to be considered simultaneously, for the sake of simplicity, the temperature is set before starting the numerical tests-using the WLF equation-and remains constant"- [14].…”

“…On the other hand, the area of passive vibration control in rotordynamics through viscoelastic supports (VES) has been well covered. The articles [1][2][3][4][5][6][7][8][9][10][11][12][13][14] acknowledge the evolution of the techniques implemented to model, simulate, and optimize the VES. The state-of-the-art highlights the use of the fractional derivative model combined to a multidegree of freedom (MDOF) concept, all combined to methods such as the generalized equivalent parameters (GEP), in order to achieve a robust and accurate model and a low computational cost [13].…”

“…In [15], the authors use translational singledegree of freedom VDNs to control lateral vibration in a rotor-bearing system. The methodology used is the one proposed in [14], adapted to a MDOF rotating system as a primary system. [16] Focuses on designing optimal VDNs with one angular degree of freedom.…”