Rotordynamics Continuum Finite Element Formulations from a Structural and Multibody Dynamics Perspective

Francesco Trainotti, Andreas Zwölfer, Justin Westphal, Daniel J. Rixen

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

Abstract

As industries strive for enhanced reliability and efficiency in product optimization, virtual prototyping has gained prominence over its physical counterpart. Advanced engineering simulation tools have thus become essential for addressing the complexities of today’s technology-driven world. The field of rotordynamics plays a critical role in the design and analysis of rotating machinery as they are widely found in various engineering devices for, e.g., energy transmission. Over the years, numerous techniques have been developed to capture the dynamic behavior of rotors. Among these, continuum finite element formulations have emerged as powerful and generic tools. Nevertheless, rotordynamics analysts often rely on simple models based on beam and rigid elements. Moreover, a variety of different formulations and implementations in commercial software exist, but their relationship to one another is oftentimes not clear. This chapter, therefore, presents an overview of rotordynamics finite element formulations based on continuum elements for generic geometries from a structural and multibody dynamics perspective. A derivation of the equations of motion for rotordynamic analyses according to a nodal-based floating frame of reference formulation is provided. Throughout the contribution, emphasis is placed on the comparison and evaluation of different modeling techniques and solution strategies, especially with respect to standard FE commercial software approaches. The discussion includes modal and steady-state analyses.

Original languageEnglish
Title of host publicationSpecial Topics in Structural Dynamics and Experimental Techniques - A Conference and Exposition on Structural Dynamics 2024
EditorsDario Di Maio
PublisherSpringer
Pages95-107
Number of pages13
ISBN (Print)9783031689000
DOIs
StatePublished - 2024
Event42nd IMAC, A Conference and Exposition on Structural Dynamics, IMAC 2024 - Orlando, United States
Duration: 29 Jan 20241 Feb 2024

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference42nd IMAC, A Conference and Exposition on Structural Dynamics, IMAC 2024
Country/TerritoryUnited States
CityOrlando
Period29/01/241/02/24

Keywords

  • Finite element method
  • Floating frame of reference formulation
  • Modeling and simulation
  • Multibody dynamics
  • Rotordynamics
  • Structural dynamics

Fingerprint

Dive into the research topics of 'Rotordynamics Continuum Finite Element Formulations from a Structural and Multibody Dynamics Perspective'. Together they form a unique fingerprint.

Cite this