Wind tunnel experiments on unstable self-excited vibration of sectional girders

Král, Radomil; Pospíšil, Stanislav; Náprstek, Jiří

doi:https://dx.doi.org/10.1016/j.jfluidstructs.2013.11.002

Number of the records: 1

Wind tunnel experiments on unstable self-excited vibration of sectional girders

1.

SYSNO ASEP	0422839
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Wind tunnel experiments on unstable self-excited vibration of sectional girders
Author(s)	Král, Radomil (UTAM-F)_{RID, SAI} Pospíšil, Stanislav (UTAM-F)_{RID, SAI, ORCID} Náprstek, Jiří (UTAM-F)_{RID, ORCID, SAI}
Number of authors	3
Source Title	Journal of Fluids and Structures. - : Elsevier - ISSN 0889-9746 Roč. 44, January (2014), s. 235-250
Number of pages	16 s.
Publication form	Print - P
Language	eng - English
Country	GB - United Kingdom
Keywords	flutter derivatives ; aeroelastic response ; frequency ratio tuning ; stability domain ; initial disturbance
Subject RIV	JM - Building Engineering
R&D Projects	GA103/09/0094 GA ČR - Czech Science Foundation (CSF)
	IAA200710902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	ED1.1.00/02.0060 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UTAM-F - RVO:68378297
UT WOS	000336466400017
EID SCOPUS	84891626992
DOI	10.1016/j.jfluidstructs.2013.11.002
Annotation	In this paper, a wind tunnel analysis of two degrees-of-freedom system represented by sectional girders is carried out. Besides an evaluation of the aeroelastic coefficients, the analysis is focused on the influence of the natural frequency ratio on the initiation of unstable vibration, which can be of practical interest. On the phenomenological level, the paper also discusses experimentally ascertained response regimes, with an emphasis on their stability character. The attention is paid to the memory effect in the response described by the hysteresis loop together with the separation curves determining the stability boundaries. The influence of initial disturbance on the stability is examined. Two types of cross-sections were investigated: (i) rectangular one with the aspect ratio 1:5, and (ii) bridge-like cross-section with comparable principal dimensions.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2015
Electronic address	http://www.sciencedirect.com/science/article/pii/S0889974613002466

Number of the records: 1