Details
| Original language | English |
|---|---|
| Title of host publication | Structures and Dynamics |
| Subtitle of host publication | Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration |
| Publisher | American Society of Mechanical Engineers(ASME) |
| ISBN (electronic) | 9780791888032 |
| Publication status | Published - 28 Aug 2024 |
| Event | 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024 - London, United Kingdom (UK) Duration: 24 Jun 2024 → 28 Jun 2024 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 10B |
Abstract
As the use of digital twins for the purpose of structural health monitoring increases, so does the demand for high-quality models. In the area of rotating machines, this means that the casing must also be taken into account. These are often geometrically complex assemblies that require the use of finite element models. The models are then reduced in size by established reduction methods like the Craig-Bampton reduction in order to keep the solution time, e.g. for a forced response analysis as low as possible. In case of nonlinear contact forces, e.g. friction in bolted joints, a secondary reduction step has to be applied. Here, three different interface reduction methods are investigated and used for a rotor-casing assembly including frictional damping. The necessary basics and terms are presented. The performance of the methods is evaluated for a linear model on substructure and assembly level and for a nonlinear model on the assembly level. The implementation of the interface reduction within the Harmonic Balance Method is presented and tested for different unbalance excitation cases.
Keywords
- casing interface reduction, friction, rotordynamics
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
Cite this
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Structures and Dynamics: Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration. American Society of Mechanical Engineers(ASME), 2024. V10BT27A001 (Proceedings of the ASME Turbo Expo; Vol. 10B).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Application of interface reduction methods to rotordynamic casing models
AU - Paehr, Martin
AU - Panning-Von Scheidt, Lars
N1 - Publisher Copyright: © 2024 by ASME.
PY - 2024/8/28
Y1 - 2024/8/28
N2 - As the use of digital twins for the purpose of structural health monitoring increases, so does the demand for high-quality models. In the area of rotating machines, this means that the casing must also be taken into account. These are often geometrically complex assemblies that require the use of finite element models. The models are then reduced in size by established reduction methods like the Craig-Bampton reduction in order to keep the solution time, e.g. for a forced response analysis as low as possible. In case of nonlinear contact forces, e.g. friction in bolted joints, a secondary reduction step has to be applied. Here, three different interface reduction methods are investigated and used for a rotor-casing assembly including frictional damping. The necessary basics and terms are presented. The performance of the methods is evaluated for a linear model on substructure and assembly level and for a nonlinear model on the assembly level. The implementation of the interface reduction within the Harmonic Balance Method is presented and tested for different unbalance excitation cases.
AB - As the use of digital twins for the purpose of structural health monitoring increases, so does the demand for high-quality models. In the area of rotating machines, this means that the casing must also be taken into account. These are often geometrically complex assemblies that require the use of finite element models. The models are then reduced in size by established reduction methods like the Craig-Bampton reduction in order to keep the solution time, e.g. for a forced response analysis as low as possible. In case of nonlinear contact forces, e.g. friction in bolted joints, a secondary reduction step has to be applied. Here, three different interface reduction methods are investigated and used for a rotor-casing assembly including frictional damping. The necessary basics and terms are presented. The performance of the methods is evaluated for a linear model on substructure and assembly level and for a nonlinear model on the assembly level. The implementation of the interface reduction within the Harmonic Balance Method is presented and tested for different unbalance excitation cases.
KW - casing interface reduction
KW - friction
KW - rotordynamics
UR - http://www.scopus.com/inward/record.url?scp=85204491480&partnerID=8YFLogxK
U2 - 10.1115/GT2024-121370
DO - 10.1115/GT2024-121370
M3 - Conference contribution
AN - SCOPUS:85204491480
T3 - Proceedings of the ASME Turbo Expo
BT - Structures and Dynamics
PB - American Society of Mechanical Engineers(ASME)
T2 - 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024
Y2 - 24 June 2024 through 28 June 2024
ER -