Application of Tuned Vibration Absorber Concept to Blisk Ring Dampers: A Nonlinear Study

Lupini, Andrea; Mitra, Mainak; Epureanu, Bogdan I.

doi:10.1115/gt2019-90168

Cited by 6 publications

(5 citation statements)

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“…To improve the dissipative ability of the FRD, one would expect to increase the dissipative ability of the other contact nodes other contact nodes (the Whereas for the lower surface, the idea is to have a wavelet shape of the FRD. A wavelet shape of the FRD has a great potential to further improve the damping ability by treating the additional mass (bump) as a tune vibration damper (Lupini et al 2019). In this work, only three bumps/concaves are included to illustrate the potential of this idea.…”

Section: Design Parametersmentioning

confidence: 99%

Geometric design of friction ring dampers in blisks using nonlinear modal analysis and Kriging surrogate model

Sun

Denimal

Yuan

et al. 2022

Struct Multidisc Optim

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Integrally bladed disks (blisk) have been widely used in the turbo-machinery industry due to its high aerodynamic performance and structural efficiency. A friction ring damper (FRD) is usually integrated in the system to improve its low damping. However, the design of the geometry of this FRD become complex and computationally expensive due to the strong nonlinearities from friction interfaces. In this work, we propose an efficient modelling strategy based on advanced nonlinear modal analysis and Kriging surrogate models to design and optimize the geometry of a 3D FRD attached to a high fidelity full-scale blisk. The 3D ring damper is parametrised with a few key geometrical parameters. The impact of each geometric parameter and their sensitivities to nonlinear dynamic response can be efficiently assessed using Kriging meta-modelling based on a few damped nonlinear normal modes. Results demonstrate that the damping performances of ring dampers can be substantially optimized through the proposed modelling strategy whilst key insights for the design of the rings are given. It is also demonstrated that the distribution of the contact normal load on the contact interfaces has a strong influence on the damping performances and can be effectively tuned via the upper surface geometry of the ring dampers.

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Section: Design Parametersmentioning

confidence: 99%

Geometric design of friction ring dampers in blisks using nonlinear modal analysis and Kriging surrogate model

Sun

Denimal

Yuan

et al. 2022

Struct Multidisc Optim

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“…Friction ring damper is an emerging damping technique for blisks to reduce vibration amplitude, which is located within the groove and underneath of the blisk. The dynamic response of ring dampers has been investigated by many researchers [15,16,19,20]. Nonlinear modal analysis for friction ring damper has also been attempted in the literature, for lumped parameter model [33] and full-scale structure [17,30,31].…”

Section: An Industrial Application: Blisk With Ring Dampermentioning

confidence: 99%

Comparison of different methodologies for the computation of damped nonlinear normal modes and resonance prediction of systems with non-conservative nonlinearities

et al. 2021

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The nonlinear modes of a non-conservative nonlinear system are sometimes referred to as damped nonlinear normal modes (dNNMs). Because of the non-conservative characteristics, the dNNMs are no longer periodic. To compute non-periodic dNNMs using classic methods for periodic problems, two concepts have been developed in the last two decades: complex nonlinear mode (CNM) and extended periodic motion concept (EPMC). A critical assessment of these two concepts applied to different types of non-conservative nonlinearities and industrial full-scale structures has not been thoroughly investigated yet. Furthermore, there exist two emerging techniques which aim at predicting the resonant solutions of a nonlinear forced response using the dNNMs: extended energy balance method (E-EBM) and nonlinear modal synthesis (NMS). A detailed assessment between these two techniques has been rarely attempted in the literature. Therefore, in this work, a comprehensive comparison between CNM and EPMC is provided through two illustrative systems and one engineering application. The EPMC with an alternative damping assumption is also derived and compared with the original EPMC and CNM. The advantages and limitations of the CNM and EPMC are critically discussed. In addition, the resonant solutions are predicted based on the dNNMs using both E-EBM and NMS. The accuracies of the predicted resonances are also discussed in detail.

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“…The effectiveness of TVA is based on the energy transfer to different regions of the frequency spectrum and the natural frequencies split that are achieved through the tuning of the additional mass. The split of the system natural frequencies shifts the resonance of the primary structure away from the area of interest, resulting in a lower amplitude response at the original frequency region [7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic performance of a novel tuned vibration absorber with nonlinear friction interfaces

Wang,

Ma,

Wang

et al. 2024

Nonlinear Dyn

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A novel tuned vibration absorber with frictional interfaces (FTVA) is proposed in this study, combining advantages of the tuned absorber and the nonlinear dry friction damping to dissipate the energy. First, the influence of the mechanism of the nonlinear dry friction damper is introduced using a simplified model with 1-dof tuned mass absorber and the hysteresis friction contact element. Second, a real layout for the FTVA is proposed using a metal strip to tune the vibration absorber, and introducing three frictional contact interfaces with variable normal loads. Both numerical and experimental studies have been carried out which indicate the effectiveness of the novel FTVA. For a well-tuned absorber with properly designed frictional interfaces, the vibration amplitude can be reduced more significantly, and the actual frequency range where vibration amplitudes are limited can be broadened with respect to a classical TVA. The nonlinear contact element contributes to avoid the additional peak vibration generated by the tuned ordinary absorber since the friction damping will be activated as the system response increases to a threshold value. Effects of contact parameters, such as the normal load of the interface, have been deeply investigated as well, which can be optimized to minimize the vibration amplitude. Basic performance of the novel FTVA have been revealed, indicating the potential to suppress vibrations of engineering structures.

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Application of Tuned Vibration Absorber Concept to Blisk Ring Dampers: A Nonlinear Study

Cited by 6 publications

References 0 publications

Geometric design of friction ring dampers in blisks using nonlinear modal analysis and Kriging surrogate model

Geometric design of friction ring dampers in blisks using nonlinear modal analysis and Kriging surrogate model

Comparison of different methodologies for the computation of damped nonlinear normal modes and resonance prediction of systems with non-conservative nonlinearities

Dynamic performance of a novel tuned vibration absorber with nonlinear friction interfaces

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