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Experimental and theoretical stability analysis of damped auto-parametric pendulum
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SYSNO ASEP 0348113 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Experimental and theoretical stability analysis of damped auto-parametric pendulum Author(s) Pospíšil, Stanislav (UTAM-F) RID, SAI, ORCID
Fischer, Cyril (UTAM-F) RID, SAI, ORCID
Náprstek, Jiří (UTAM-F) RID, ORCID, SAINumber of authors 3 Source Title Engineering Mechanics 2010, Book of extended abstracts. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2010 / Zolotarev I. - ISBN 978-80-87012-26-0 Pages s. 111-123 Number of pages 13 s. Action Engineering Mechanics 2010 Event date 10.05.2010-13.05.2010 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords damped pendulum ; experimental device ; autoparametric system Subject RIV JM - Building Engineering R&D Projects GA103/09/0094 GA ČR - Czech Science Foundation (CSF) GC103/07/J060 GA ČR - Czech Science Foundation (CSF) IAA200710805 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA2071401 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20710524 - UTAM-F (2005-2011) Annotation The article describes an experimental and theoretical treatment of the auto-parametric pendulum damper modelled as a double-degree-of-freedom (DDOF) system. It is strongly non-linear, with the harmonic excitation being applied in the suspension point and interpreted for instance as an excitation by wind. The stability of the motion in a vertical plane is analysed in the meaning of semi-trivial vibration. This effect of stability loss and possible stability regain is very important from practical point of view, because the motion of an damper beyond the stability limits may act negatively and thus endanger the structure itself. Special experimental frame was developed.The stability of the system is analysed experimentally and compared with theoretical results. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2011
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