FLOW-INDUCED VIBRATION OF A LONG FLEXIBLE SHEET IN TANGENTIAL FLOW
dc.contributor.author | Šidlof, Petr | |
dc.contributor.author | Kolář, Jan | |
dc.contributor.author | Peukert, Pavel | |
dc.date.accessioned | 2019-10-07T07:18:28Z | |
dc.date.available | 2019-10-07T07:18:28Z | |
dc.date.issued | 2018 | |
dc.description.abstract | During certain stages of the offset printing process, the paper sheet is conveyed by the blower air. Vibration and acoustic measurements confirmed that under certain circumstances the sheet undergoes flow-induced vibration with significant amplitudes, generating a serious noise source at the same frequency. In order to understand the fluid-structure interaction between the flexible paper sheet and air exiting the nozzles, and to assess the conditions when unstable paper vibration with large amplitudes is possible, a simplified analytical model was developed. The paper sheet, modeled as a flexible 1D chain, is fully coupled to quasi-1D inviscid flow. Under the assumption of small deflections, the coupled equations can be analytically solved in frequency domain, yielding complex eigenfrequencies of the system. For a given flow velocity (corresponding to a specific air pressure setting), the real and imaginary part of the eigenfrequency determines whether the system is stable or unstable. | cs |
dc.format.extent | 6 stran | cs |
dc.identifier.doi | 10.14311/TPFM.2018.034 | |
dc.identifier.orcid | 0000-0002-4017-0819 Šidlof, Petr | |
dc.identifier.uri | https://dspace.tul.cz/handle/15240/153848 | |
dc.identifier.uri | http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2018/34-TPFM2018.pdf | |
dc.language.iso | cs | cs |
dc.publisher | ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC | |
dc.relation.ispartof | TOPICAL PROBLEMS OF FLUID MECHANICS 2018 | |
dc.relation.ispartofseries | Topical Problems of Fluid Mechanics | |
dc.subject | offset printing systems | cs |
dc.subject | flutter | cs |
dc.subject | fluid-structure interaction | cs |
dc.title | FLOW-INDUCED VIBRATION OF A LONG FLEXIBLE SHEET IN TANGENTIAL FLOW | cs |
dc.type | Proceedings Paper | |
local.citation.epage | 256 | |
local.citation.spage | 251 | |
local.event.edate | 2018-02-23 | |
local.event.location | Prague, CZECH REPUBLIC | |
local.event.sdate | 2018-02-21 | |
local.event.title | Conference on Topical Problems of Fluid Mechanics |
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