The relevance of the dynamic behaviour of the supporting structure in calculating critical speeds of multistage centrifugal pumps with interstage seals

  • N. Bachschmid
  • K. L. Cavalca
  • F. Cheli
Conference paper


The dynamic behaviour of a six-stage centrifugal pump rotor is calculated with different models of the supporting structure. The differences in the obtained results show that an accurate modelling of the supporting structure is necessary if the dynamic properties of the seals are considered.


Frequency Response Mode Shape Supporting Structure Centrifugal Pump Critical Speed 
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Copyright information

© Springer-Verlag London Limited 1992

Authors and Affiliations

  • N. Bachschmid
    • 1
  • K. L. Cavalca
    • 1
  • F. Cheli
    • 1
  1. 1.Dipartimento di MeccanicaPolitecnico di MilanoItaly

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