Model order reduction of rotordynamical systems

Kristin Krenek, Rudy Eid, Boris Lohmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


This paper presents an approach for model order reduction of linear rotordynamical systems resulting from the accurate modeling of large machines with a rotor. Automatically partitioning the overall model into decoupled sub-models, describing the main components, namely, rotor, bearing and housing, allows these to be separately considered, and if necessary, reduced using a suitable reduction method. For instance, for large-sized systems with Krylovsubspace methods. The resulting subsystems are then re-coupled to deliver a reduced-order model of the overall machine which can be simulated far faster then when compared to the original one. As an example, the method presented here is applied to reduce a simplified finiteelement model of a gas compressor drive.

Original languageEnglish
Title of host publicationProceedings of the 18th IFAC World Congress
PublisherIFAC Secretariat
Number of pages6
Edition1 PART 1
ISBN (Print)9783902661937
StatePublished - 2011

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
Number1 PART 1
ISSN (Print)1474-6670


  • Decoupling
  • Electrical machines
  • Model order reduction
  • Reduced-order models
  • Rotordynamics


Dive into the research topics of 'Model order reduction of rotordynamical systems'. Together they form a unique fingerprint.

Cite this