Control strategies for friction dampers: numerical assessment and experimental investigations.
The use of friction dampers has been proposed in a wide variety of mechanical systems for which it is not possible to apply viscoelastic materials, fluid based dampers or others viscous dampers. An important example is the application of friction dampers in aircraft engines to reduce the blades vibr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2014-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/matecconf/20141607007 |
| _version_ | 1819279805247389696 |
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| author | Coelho H.T. Santos M.B. Lepore Neto F.P. Mahfoud J. |
| author_facet | Coelho H.T. Santos M.B. Lepore Neto F.P. Mahfoud J. |
| author_sort | Coelho H.T. |
| collection | DOAJ |
| description | The use of friction dampers has been proposed in a wide variety of mechanical systems for which it is not possible to apply viscoelastic materials, fluid based dampers or others viscous dampers. An important example is the application of friction dampers in aircraft engines to reduce the blades vibration amplitudes. In most cases, friction dampers have been studied in a passive way, however, a significant improvement can be achieved by controlling the normal force in the dampers. The aim of this paper is to study three control strategies for friction dampers based on the hysteresis cycle. The first control strategy maximizes the energy removal in each harmonic oscillation cycle, by calculating the optimum normal force based on the last displacement peak. The second control strategy combines the first one with the maximum energy removal strategy used in the smart spring devices. Finally, is presented the strategy which homogenously modulates the friction force. Numerical studies were performed with these three strategies defining the performance metrics. The best control strategy was applied experimentally. The experimental test rig was fully identified and its parameters were used for the numerical simulations. The obtained results show the good performance for the friction damper and the selected strategy. |
| first_indexed | 2024-12-24T00:33:44Z |
| format | Article |
| id | doaj.art-12bc7215f9174b628767cc90b7450041 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-24T00:33:44Z |
| publishDate | 2014-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-12bc7215f9174b628767cc90b74500412022-12-21T17:24:10ZengEDP SciencesMATEC Web of Conferences2261-236X2014-01-01160700710.1051/matecconf/20141607007matecconf_csndd2014_07007Control strategies for friction dampers: numerical assessment and experimental investigations.Coelho H.T.0Santos M.B.1Lepore Neto F.P.2Mahfoud J.3Mechanical System Laboratory, Mechanical Engineering School, Federal University of UberlandiaMechanical System Laboratory, Mechanical Engineering School, Federal University of UberlandiaMechanical System Laboratory, Mechanical Engineering School, Federal University of UberlandiaLaMCoS, Insa LyonThe use of friction dampers has been proposed in a wide variety of mechanical systems for which it is not possible to apply viscoelastic materials, fluid based dampers or others viscous dampers. An important example is the application of friction dampers in aircraft engines to reduce the blades vibration amplitudes. In most cases, friction dampers have been studied in a passive way, however, a significant improvement can be achieved by controlling the normal force in the dampers. The aim of this paper is to study three control strategies for friction dampers based on the hysteresis cycle. The first control strategy maximizes the energy removal in each harmonic oscillation cycle, by calculating the optimum normal force based on the last displacement peak. The second control strategy combines the first one with the maximum energy removal strategy used in the smart spring devices. Finally, is presented the strategy which homogenously modulates the friction force. Numerical studies were performed with these three strategies defining the performance metrics. The best control strategy was applied experimentally. The experimental test rig was fully identified and its parameters were used for the numerical simulations. The obtained results show the good performance for the friction damper and the selected strategy.http://dx.doi.org/10.1051/matecconf/20141607007 |
| spellingShingle | Coelho H.T. Santos M.B. Lepore Neto F.P. Mahfoud J. Control strategies for friction dampers: numerical assessment and experimental investigations. MATEC Web of Conferences |
| title | Control strategies for friction dampers: numerical assessment and experimental investigations. |
| title_full | Control strategies for friction dampers: numerical assessment and experimental investigations. |
| title_fullStr | Control strategies for friction dampers: numerical assessment and experimental investigations. |
| title_full_unstemmed | Control strategies for friction dampers: numerical assessment and experimental investigations. |
| title_short | Control strategies for friction dampers: numerical assessment and experimental investigations. |
| title_sort | control strategies for friction dampers numerical assessment and experimental investigations |
| url | http://dx.doi.org/10.1051/matecconf/20141607007 |
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