![](/images/graphics-bg.png)
Model Updating for Systems with General Proportional Damping Using Complex FRFs
Joint Authors
Chen, Guoping
Wu, Xinhai
He, Huan
Liu, Yang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-20
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In this paper, we propose a model updating method for systems with nonviscous proportional damping.
In comparison to the traditional viscous damping model, the introduction of nonviscous damping will not only reduce the vibration of the system but also change the resonance frequencies.
Therefore, most of the existing updating methods cannot be directly applied to systems with nonviscous damping.
In many works, for simplicity, the Rayleigh damping model has been applied in the model updating procedure.
However, the assumption of Rayleigh damping may result in large errors of damping for higher modes.
To capture the variation of modal damping ratio with frequency in a more general way, the diagonal elements of the modal damping matrix and relaxation parameter are updated to characterize the damping energy dissipation of the structure by the proposed method.
Spatial and modal incompleteness are both discussed for the updating procedure.
Numerical simulations and experimental examples are adopted to validate the effectiveness of the proposed method.
The results show that the systems with general proportional damping can be predicted more accurately by the proposed updating method.
American Psychological Association (APA)
Wu, Xinhai& He, Huan& Liu, Yang& Chen, Guoping. 2020. Model Updating for Systems with General Proportional Damping Using Complex FRFs. Shock and Vibration،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1213160
Modern Language Association (MLA)
Wu, Xinhai…[et al.]. Model Updating for Systems with General Proportional Damping Using Complex FRFs. Shock and Vibration No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1213160
American Medical Association (AMA)
Wu, Xinhai& He, Huan& Liu, Yang& Chen, Guoping. Model Updating for Systems with General Proportional Damping Using Complex FRFs. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1213160
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1213160