Search results
- 1.0564891 - ÚT 2023 CZ eng C - Conference Paper (international conference)
Ferfecki, P. - Zapoměl, Jaroslav - Molčan, M.
Design of the magnetically sensitive hydrodynamic bearing for the experimental rotor rig.
Engineering mechanics 2022. Book of full texts. Prague: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2022 - (Fischer, C.; Náprstek, J.), s. 105-108. ISBN 978-80-86246-48-2. ISSN 1805-8248. E-ISSN 1805-8256.
[Engineering Mechanics 2022 - International Conference /27./28./. Milovy (CZ), 09.05.2022-12.05.2022]
Institutional support: RVO:61388998
Keywords : magnetically sentivive fluid * hydrodynamic lubrication * sommerfeld number * experimental measurement * load bearing capacity
OECD category: Applied mechanics
https://www.engmech.cz/improc/2022/105.pdf
Permanent Link: https://hdl.handle.net/11104/0338026 - 2.0564886 - ÚT 2023 CZ eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P. - Molčan, M. - Kozánek, Jan
Analysis of vibration of rotors with a thick rigid disc on the overhanging end supported by hydrodynamic bearings and loaded by uncertain unbalance effects.
Engineering mechanics 2022. Book of full texts. Prague: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2022 - (Fischer, C.; Náprstek, J.), s. 409-412. ISBN 978-80-86246-48-2. ISSN 1805-8248. E-ISSN 1805-8256.
[Engineering Mechanics 2022 - International Conference /27./28./. Milovy (CZ), 09.05.2022-12.05.2022]
R&D Projects: GA MŠMT LQ1602
Institutional support: RVO:61388998
Keywords : rotors * hydrodynamic bearings * rigid discs on overhanging end * uncertain unbalance parameters * fuzzy number approach
OECD category: Applied mechanics
https://www.engmech.cz/improc/2022/409.pdf
Permanent Link: https://hdl.handle.net/11104/0338008 - 3.0539036 - ÚT 2021 RIV CZ eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P.
Effect of the controllable bearings lubricated by magnetically sensitive oil on vibration of rigid rotors.
ENGINEERING MECHANICS 2020. Brno: Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics, 2020 - (Fuis, V.), s. 544-547. ISBN 978-80-214-5896-3. ISSN 1805-8248.
[International Conference Engineering Mechanics 2020 /26./. Brno (CZ), 24.11.2020-25.11.2020]
Institutional support: RVO:61388998
Keywords : controllable hydrodynamic bearing * composite magnetic fluids * increase of the load capacity * vibration attenuation * rigid rotors
OECD category: Applied mechanics
https://www.engmech.cz/im/doc/EM2020_proceedings.pdf
Permanent Link: http://hdl.handle.net/11104/0316860 - 4.0538952 - ÚT 2021 RIV CZ eng C - Conference Paper (international conference)
Molčan, M. - Ferfecki, P. - Zapoměl, Jaroslav
Efficient numerical computation of the steady-state response and stability analysis of the rotor systems with squeeze film dampers.
ENGINEERING MECHANICS 2020. Brno: Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics, 2020 - (Fuis, V.), s. 354-357. ISBN 978-80-214-5896-3. ISSN 1805-8248.
[International Conference Engineering Mechanics 2020 /26./. Brno (CZ), 24.11.2020-25.11.2020]
Institutional support: RVO:61388998
Keywords : harmonic balance method * Floquet theory * Hill’s method * nonlinear forces * flexible rotor
OECD category: Applied mechanics
https://www.engmech.cz/im/doc/EM2020_proceedings.pdf
Permanent Link: http://hdl.handle.net/11104/0316859 - 5.0490200 - ÚT 2019 RIV CZ eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P. - Sudhakar, A. - Kozánek, Jan
The influence of permanent magnetic rings on the loss power, vibration and stability of vertical rotors.
Engineering mechanics 2018. Book of full texts. Prague: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2018 - (Fischer, C.; Náprstek, J.), s. 953-956, č. článku 60. ISBN 978-80-86246-88-8. ISSN 1805-8248.
[Engineering mechanics 2018 /24./. Svratka (CZ), 14.05.2018-17.05.2018]
Grant - others:AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Institutional support: RVO:61388998
Keywords : lifting vertical rotors * magnetic rings * energy losses reduction * vibration stability evaluation
OECD category: Energy and fuels
Permanent Link: http://hdl.handle.net/11104/0285137 - 6.0487856 - ÚT 2019 RIV CZ eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P. - Sudhakar, A. - Kozánek, Jan
Vibration stability of a vertical flywheel lifted by permanent magnetic rings.
DYMAMESI 2018 - Proceedings. Prague: Institute of Thermomechanics AS CR, v. v. i., 2018 - (Zolotarev, I.; Pešek, L.; Kozieň, M.), s. 87-90. ISBN 978-80-87012-66-6.
[DYMAMESI 2018 - Dynamics of Machines and Mechanical Systems with Interactions. Prague (CZ), 06.03.2018-07.03.2018]
Grant - others:AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Institutional support: RVO:61388998
Keywords : vertical flywheels * permanent magnets * vibration stability
OECD category: Energy and fuels
Permanent Link: http://hdl.handle.net/11104/0286765 - 7.0484157 - ÚT 2018 RIV US eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P.
Application of the magnetorheological squeeze film dampers for reducing energy losses in supports of rotors of rotating machines.
Proceedings of the ASME Design Engineering Technical Conference. Washington: American Society of Mechanical Engineers (ASME), 2017, s. 1-7, č. článku 131761. ISBN 978-07-918-5822-6.
[ASME 2017 International design engineering technical conferences&computers and information in engineering conference. Cleveland, Ohio (US), 06.08.2017-09.08.2017]
R&D Projects: GA ČR GA15-06621S
Institutional support: RVO:61388998
Keywords : magnetorheological dampers * rotors * energy losses
OECD category: Mechanical engineering
Permanent Link: http://hdl.handle.net/11104/0279491 - 8.0469220 - ÚT 2017 RIV GB eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P.
Vibration attenuation of rotating machines by application of magnetorheological dampers to minimize energy losses in the rotor support.
Journal of Physics: Conference Series. Vol. 1. Bristol: Institute of Physics Publishing, 2016, č. článku 012154. 1, 760. ISSN 1742-6588.
[International Conference on Motion and Vibration Control /13./ : MOVIC 2016 and the International Conference on Recent Advances in Structural Dynamics /12./ : RASD 2016/. Southampton (GB), 04.07.2016-06.07.2016]
R&D Projects: GA ČR GA15-06621S
Institutional support: RVO:61388998
Keywords : vibration control * rigid rotors * computational simulation
Subject RIV: BI - Acoustics
Permanent Link: http://hdl.handle.net/11104/0267038 - 9.0464126 - ÚT 2017 RIV LT eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Ferfecki, P. - Kozánek, Jan
Minimizing the vibration amplitude of rotating machinery running through the resonance area by application of magnetorheological squeeze film dampers.
Vibroengineering Procedia. Kaunas: JVE International, 2016 - (Ragulskis, K.), s. 68-73, č. článku 124414. ISSN 2345-0533.
[Vibroengineering /22./. Moscow (RU), 04.10.2016-07.10.2016]
R&D Projects: GA ČR GA15-06621S
Institutional support: RVO:61388998
Keywords : magnetorheological dampers * bilinear materia * strongly nonlinear damping forces * controllable attenuation of the rotor vibrations
Subject RIV: BI - Acoustics
Permanent Link: http://hdl.handle.net/11104/0266663 - 10.0459372 - ÚT 2017 RIV CZ eng C - Conference Paper (international conference)
Ferfecki, P. - Zapoměl, Jaroslav - Kozánek, Jan - Dekýš, V.
Stability analysis of the lateral oscillations of a flexibly supported viscoelastic Jeffcott rotor.
ENGINEERING MECHANICS 2016. Praha: Ústav termomechaniky AV ČR, v. v. i., 2016 - (Zolotarev, I.; Radolf, V.), s. 146-149. ISBN 978-80-87012-59-8. ISSN 1805-8248.
[Engineering Mechanics 2016 /22./. Svratka (CZ), 09.05.2016-12.05.2016]
R&D Projects: GA ČR GA15-06621S
Institutional support: RVO:61388998
Keywords : Jeffcott rotor * Zener material * squeeze film dampers * vibration amplitude and stability
Subject RIV: BI - Acoustics
Permanent Link: http://hdl.handle.net/11104/0260725