Abstract
The present paper is devoted to the modeling of systems comprising a flexible rotor mounted onto an elastic base, undergoing arbitrary rotations. By using a Lagrangian approach, the equations of motion are derived for the coupled rotor-base system, considering finite element discretization for both the base and the rotor. Numerical simulations are performed for a specific configuration of the rotor-bearing system and attitude motion. Results are interpreted to evaluate, both qualitatively and quantitatively, the influence of the base motion and flexibility on the dynamic behavior of the rotor, in terms of unbalance responses. Based on the results, conclusions are drawn, especially in terms of the conditions under which the flexibility of the base is indispensable for accurate prediction of the rotor behavior.
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Acknowledgments
T.P. Sales is grateful to the São Paulo Research Foundation (FAPESP) for his post-doctoral grant #2017/23420-6 and #2015/20363-6. E. Spuldaro also express his gratitude to FAPESP for his M.Sc. scholarship grant #2016/16480-0. L.F. Damy is grateful to the Brazilian Army for supporting his research work. D.A. Rade gratefully acknowledges FAPESP (grant #2015/20363-6) and CNPq (grant #402238/2013-3 and #310633/2013-3) for the support to his research activities.
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Sales, T.d.P., Spuldaro, E., Damy, L.F., Rade, D.A. (2019). Dynamic Modeling of Flexible Rotors Mounted on an Elastic Base Undergoing Arbitrary Attitude Motion. In: Cavalca, K., Weber, H. (eds) Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM . IFToMM 2018. Mechanisms and Machine Science, vol 61. Springer, Cham. https://doi.org/10.1007/978-3-319-99268-6_39
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DOI: https://doi.org/10.1007/978-3-319-99268-6_39
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