A Numerical Study on the Performance of Nonlinear Models of a Microvibration Isolator
Joint Authors
Wang, Jie
Zhao, Shougen
Wu, Dafang
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-23, 23 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-21
Country of Publication
Egypt
No. of Pages
23
Main Subjects
Abstract EN
A non-Newton fluid microvibration isolator is studied in this paper and several nonlinear models are firstly presented to characterize its vibration behaviors due to the complicated effects of internal structure, external excitation, and fluid property.
On the basis of testing hysteretic loops, the generalized pattern search (GPS) algorithm of MATLAB optimization toolbox is used to identify the model parameters.
With the use of the fourth-order Runge-Kutta method, the performance of these nonlinear models is further estimated.
The results show that, in the cases of force excitation (FE), the generalized nonlinear model (GNM) and the complicated model (CM) can properly characterize the physical vibration in the frequency band of 5–20 Hz.
However, in the frequency band of 30–200 Hz, the Maxwell model shows more excellent performance.
After the application of orthogonal testing method, several important factors, for example, damping coefficient and flow index, are obtained; then a parametric analysis is carried out with the purpose of further studying the influences of nonlinear model parameters.
It can be seen that only the GNM and CM can consider the above nonlinear effects in both the FE cases and the foundation displacement excitation (FDE) cases, but the CM is not convenient to use in practice.
American Psychological Association (APA)
Wang, Jie& Zhao, Shougen& Wu, Dafang. 2014. A Numerical Study on the Performance of Nonlinear Models of a Microvibration Isolator. Shock and Vibration،Vol. 2014, no. 2014, pp.1-23.
https://search.emarefa.net/detail/BIM-1047945
Modern Language Association (MLA)
Wang, Jie…[et al.]. A Numerical Study on the Performance of Nonlinear Models of a Microvibration Isolator. Shock and Vibration No. 2014 (2014), pp.1-23.
https://search.emarefa.net/detail/BIM-1047945
American Medical Association (AMA)
Wang, Jie& Zhao, Shougen& Wu, Dafang. A Numerical Study on the Performance of Nonlinear Models of a Microvibration Isolator. Shock and Vibration. 2014. Vol. 2014, no. 2014, pp.1-23.
https://search.emarefa.net/detail/BIM-1047945
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047945