PT Unknown
AU Hörtnagel, W
   Zamojsky, M
   Dohnal, F
AU 6. IFToMM D-A-CH Konferenz 2020 : 27./28. Februar 2020, Campus Technik Lienz
TI Towards an analytical estimation of the maximum amplitude during passage through resonance at parametric anti-resonance
SE Sechste IFToMM D-A-CH Konferenz 2020: 27./28. Februar 2020, Campus Technik Lienz
PD 04
PY 2020
VL 2020
DI 10.17185/duepublico/71180
LA de
AB During run-up or run-down processes, rotating machines are excited by unbalance forces with continuously increasing
or decreasing excitation frequency. If a critical speed has to be passed, the maximum amplitudes during this passage
through resonance are a major criterion for the design of the rotor. An analytical prediction of the maximum amplitude
is sought in order to allow an efficient design process. We revisit the problem of describing the dynamic response using
error functions. Additionally, we apply the homotopy analysis method for deriving an approximation of the maximum
vibration amplitude with a time-periodic modulation of the bearing stiffness.
ER