Non-parametric modelling of damper top mounts

This paper details a new non-linear damper top-mount model, and the processes utilized to identify the constituent parameters. The damper top-mount model parameters are extracted from experimental data on commercial damper top mounts. The non-parametric restoring-force-mapping technique is used to c...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering Journal of automobile engineering, 2012-06, Vol.226 (6), p.740-753
Main Authors: Kaldas, Mina MS, Çalışkan, Kemal, Henze, Roman, Küçükay, Ferit
Format: Article
Language:English
Subjects:
Applied sciences
Automobiles
Automotive engineering
Computer simulation
Constituents
Dampers
Exact sciences and technology
Friction
Machine components
Mapping
Mathematical models
Mechanical engineering. Machine design
Nonlinear systems
Nonlinearity
Optimization
Parameter identification
Simulation
Springs and dampers
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Summary:This paper details a new non-linear damper top-mount model, and the processes utilized to identify the constituent parameters. The damper top-mount model parameters are extracted from experimental data on commercial damper top mounts. The non-parametric restoring-force-mapping technique is used to construct the damper top-mount model. A damper top-mount model that consists of three elements, which are the non-linear elastic element, the non-linear friction element and the non-linear viscous element, is developed. The amplitude dependence of the top-mount characteristics is modelled by using the friction element and the elastic element, while the frequency dependence of the top mount is modelled by using the restoring-force-mapping technique. In order to obtain and optimize the required model parameters, a new procedure based on a two-stage optimization routine using two different sets of the measurement data for the amplitude-dependent parameters and the frequency-dependent parameters, is proposed. The model is validated by comparing the measured and simulated forces for three different damper top mounts. Good agreement between the measured force and the simulated force is obtained. Furthermore, the proposed model is found to be superior to the existing rubber isolator models.
ISSN:0954-4070
2041-2991
DOI:10.1177/0954407011428237