Abstract
The mechanical properties of supports in a mechanical system strongly affect its dynamic behavior under real operating conditions. This work presents a new method for identifying the dynamical characteristics of local supports which has been developed along the lines of the work by Özgüven (Mech Syst Signal Process 4:53–63, 1990) and Debut et al. (Proceeding of the 19th international congress on sound and vibration, Vilnius, Lithuania, 2012), which combines measured frequency transfer functions and techniques from structural modifications . As typical for inverse problem , the noise in the frequency transfer functions lead to faulty identifications , so that regularization techniques have been implemented to mitigate noise amplification in the inverse problem . The proposed approach has been then numerically tested on a multi-supported structure, which can be seen as an idealized electricity generator rotor shaft. The results are satisfactory for noise-free data as well as under realistic noise levels.
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References
Arumugam P, Swarnamani S, Prabhu BS (1994) Experimental identification of linearized oil film coefficients of cylindrical and tilting pad bearings. In ASME 1994 international gas turbine and aeroengine congress and exposition. American Society of Mechanical Engineers, pp V005T14A012–V005T14A012
Chan SH, White MF (1991) Experimental determination of dynamic characteristics of a full size gas turbine tilting-pad journal bearing by an impact test method. In Modal analysis, modeling, diagnostics, and control: analytical and experimental, DE, vol 38, pp 291–298
Debut V, Delaune X, Antunes J (2010) Identification of the nonlinear excitation force acting on a bow string using the dynamical responses at remote locations. Int J Mech Sci 52(1419):1436
Debut V, Carvalho M, Antunes J (2012) Recovering the unconstrained modes of axisymmetric structures from measurements under constrained condition. In: Proceeding of the 19th international congress on sound and vibration, Vilnius, Lithuania
Delaune X, Antunes J, Debut V, Piteau P, Borsoi L (2010) Modal techniques for the remote identification of nonlinear reaction at gap-supported tubes under turbulent excitation. J Pressure Vessel Technol 132:031801-3
Dowson D, Taylor CM (1980) The state of knowledge in the field of bearing-influenced rotor dynamics. Tribol Int 13(5):196–198
Nordmann R, Scholhom K (1980) Identification of stiffness and damping coefficient of journal bearing by impact method. In: Proceedings of international conference on vibration in rotating machinery, Institute of Mechanical Engineering, vol C285/80, pp 231–238
Özgüven HN (1990) Structural modifications using frequency response functions. Mech Syst Signal Process 4:53–63
Qiu ZL, Tieu AK (1997) Identification of sixteen force coefficients of two journal bearings from impulse responses. Wear 212(2):206–212
Ramsden P (1968) Review of published data and their application to the design of large bearings for steam turbines. In: Proceedings of conference in lubrication and wear: fundamentals and application to design, IMechE, vol 182, Part 3A, pp 75–81
Tiwari R, Lees AW, Friswell MI (2004) Identification of dynamic bearing parameters: a review. Shock Vib Digest 36(2):99–124
Wang JH, Liou CM (1991) Experimental identification of mechanical joint parameters. J Vib Acoust 113(1):28–36
Acknowledgments
This work was supported by the Portuguese FCT through the bilateral agreement Portugal/Tunisia 2013–2014.
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Baklouti, A., Antunes, J., Debut, V., Fakhkakh, T., Haddar, M. (2017). An Effective Method for the Identification of Support Features in Multi-supported Systems. In: Fakhfakh, T., Chaari, F., Walha, L., Abdennadher, M., Abbes, M., Haddar, M. (eds) Advances in Acoustics and Vibration. Applied Condition Monitoring, vol 5. Springer, Cham. https://doi.org/10.1007/978-3-319-41459-1_29
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DOI: https://doi.org/10.1007/978-3-319-41459-1_29
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