Details
| Original language | English |
|---|---|
| Title of host publication | International Conference on Noise and Vibration Engineering (ISMA 2020) and International Conference on Uncertainty in Structural Dynamics (USD 2020) |
| Editors | W. Desmet, B. Pluymers, D. Moens, S. Vandemaele |
| Pages | 2219-2229 |
| Number of pages | 11 |
| ISBN (electronic) | 9781713827054 |
| Publication status | Published - 2020 |
| Event | 2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020 - online (Leuven), Belgium Duration: 7 Sept 2020 → 9 Sept 2020 |
Abstract
The determination of model parameters by fitting measurement data is a common and widely used procedure. Especially with non-smooth, nonlinear systems, however, there are increasing challenges. This paper presents an approach to identify section wise linear functions, in particular also the transition points. The method is applied to an oscillator with penalty contact, whose characteristic is the bilinear restoring force. Using simulation data, the accuracy, the influence of the stiffness ratio between penalty and oscillator stiffness and the signal-to-noise ratio are investigated. Subsequently, the method is applied to an experimental test structure to determine a mechanical equivalent model. A time-step integration of the substitute model is finally compared with the measured data.
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Mechanics of Materials
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
International Conference on Noise and Vibration Engineering (ISMA 2020) and International Conference on Uncertainty in Structural Dynamics (USD 2020). ed. / W. Desmet; B. Pluymers; D. Moens; S. Vandemaele. 2020. p. 2219-2229.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Parameter identification for nonsmooth nonlinear dynamical systems
AU - Kasper, T.
AU - Tatzko, S.
AU - Wallaschek, J.
PY - 2020
Y1 - 2020
N2 - The determination of model parameters by fitting measurement data is a common and widely used procedure. Especially with non-smooth, nonlinear systems, however, there are increasing challenges. This paper presents an approach to identify section wise linear functions, in particular also the transition points. The method is applied to an oscillator with penalty contact, whose characteristic is the bilinear restoring force. Using simulation data, the accuracy, the influence of the stiffness ratio between penalty and oscillator stiffness and the signal-to-noise ratio are investigated. Subsequently, the method is applied to an experimental test structure to determine a mechanical equivalent model. A time-step integration of the substitute model is finally compared with the measured data.
AB - The determination of model parameters by fitting measurement data is a common and widely used procedure. Especially with non-smooth, nonlinear systems, however, there are increasing challenges. This paper presents an approach to identify section wise linear functions, in particular also the transition points. The method is applied to an oscillator with penalty contact, whose characteristic is the bilinear restoring force. Using simulation data, the accuracy, the influence of the stiffness ratio between penalty and oscillator stiffness and the signal-to-noise ratio are investigated. Subsequently, the method is applied to an experimental test structure to determine a mechanical equivalent model. A time-step integration of the substitute model is finally compared with the measured data.
UR - http://www.scopus.com/inward/record.url?scp=85105810717&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85105810717
SP - 2219
EP - 2229
BT - International Conference on Noise and Vibration Engineering (ISMA 2020) and International Conference on Uncertainty in Structural Dynamics (USD 2020)
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - Vandemaele, S.
T2 - 2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020
Y2 - 7 September 2020 through 9 September 2020
ER -