178 B. Vervisch et al. measured modeled 1000 2000 2500 3000 3500 4000 4500 Rotating speed [rpm] - 0.61 - 0.52 - 0.32 - 0.25 - 0.22 - 0.209 - 0.205 - 0.19 0 Fig. 16.6 The decay rate plot is constructed with the identified damping matrices at 0 and 3,000 rpm. The results are validated by individual measurements at different speeds References 1. Vervisch B, Stockman K, Loccufier M (2014) Estimation of the damping matrix in rotating machinery for the calculation of the stability threshold speed. Int J Struct Stab Dyn 14:1450012 2. Tisseur F, Meerbergen K (2006) The quadratic eigenvalue problem. Soc Ind Appl Math 43(2):235–286 3. Bucher I, Ewins DJ (2001) Modal analysis and testing of rotating structures. Philos Trans R Soc A Math Phys Eng Sci 359(1778):61–96 4. Vervisch B, Stockman K, Loccufier M (2012) Sensitivity of the stability threshold in linearized rotordynamics. In: ISMA conference, Leuven 5. Adams ML (2009) Rotating machinery vibration: from analysis to troubleshooting. CRC Press/Taylor & Francis, Boca Raton 6. Adams ML, Padovan J (1981) Insights into linearized rotor dynamics. J Sound Vib 76(1):129–142 7. Genta G (2005) Dynamics of rotating systems, vol 1. Springer, New York 8. Srikantha Phani A, Woodhouse J (2007) Viscous damping identification in linear vibration. J Sound Vib 303(3–5):475–500 9. Adhikari S, Woodhouse J (2001) Identification of damping: part 1, viscous damping. J Sound Vib 243(1):43–61 10. Adhikari S, Woodhouse J (2002) Identification of damping: part 4, error analysis. J Sound Vib 251(3):491–504 11. Srikantha Phani A, Woodhouse J (2009) Experimental identification of viscous damping in linear vibration. J Sound Vib 319(3–5):832–849 12. Foltête E, Gladwell GML, Lallement G (2001) On the Reconstruction of a damped vibrating system from two complex spectra, part 2: experiment. J Sound Vib 240(2):219–240 13. Pilkey DF, Inman DJ (1997) An iterative approach to viscous damping matrix identification. In: IMAC XV proceedings, pp 1152–1157 14. Adhikari S, Woodhouse J (2002) Identification of damping: part 3, symmetry-preserving methods. J Sound Vib 251(3):477–490 15. Balmes E (1997) New results on the identification of normal modes from experimental complex modes. Mech Syst Signal Process 11(2):229– 243 16. Vervisch B, Derammelaere S, Stockman K, Loccufier M (2014) Frequency response functions and modal parameters of a rotating system exhibiting rotating damping. In: ISMA conference 2014 17. Brandt A (2011) Noise and vibration analysis: signal analysis and experimental procedures. Wiley, Chichester 18. Forrai L (2000) A finite element model for stability analysis of symmetrical rotor systems with internal damping. JCAM 1(1):37–47 19. Lin RM, Ewins DJ (1994) Analytical model improvement using frequency response functions. Mech Syst Signal Process
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