Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/95605
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleA Space-frequency Data Compression Method For Spatially Dense Laser Doppler Vibrometer Measurementspt_BR
dc.contributor.authorDe Franca Arruda J.R.pt_BR
dc.contributor.authorAugusto S.pt_BR
dc.contributor.authorDo Rio V.pt_BR
dc.contributor.authorSilva L.A.pt_BR
dc.contributor.authorSantos B.pt_BR
unicamp.authorDe França Arruda, J.R., Universidade Estadual de Campinas, Departmento Mecanica Computacional, Campinas, SP 13083-970, Brazilpt_BR
unicamp.authorAugusto, S., Universidade Estadual de Campinas, Departmento Mecanica Computacional, Campinas, SP 13083-970, Brazilpt_BR
unicamp.authorDo Rio, V., Universidade Estadual de Campinas, Departmento Mecanica Computacional, Campinas, SP 13083-970, Brazilpt_BR
unicamp.authorSilva, L.A., Universidade Estadual de Campinas, Departmento Mecanica Computacional, Campinas, SP 13083-970, Brazilpt_BR
unicamp.authorSantos, B., Universidade Estadual de Campinas, Departmento Mecanica Computacional, Campinas, SP 13083-970, Brazilpt_BR
dc.description.abstractWhen spatially dense mobility shapes are measured with scanning laser Doppler vibrometers, it is often impractical to use phase-separation modal parameter estimation methods due to the excessive number of highly coupled modes and to the prohibitive computational cost of processing huge amounts of data. To deal with this problem, a data compression method using Chebychev polynomial approximation in the frequency domain and two-dimensional discrete Fourier series approximation in the spatial domain, is proposed in this article. The proposed space-frequency regressive approach was implemented and verified using a numerical simulation of a free-free-free-free suspended rectangular aluminum plate. To make the simulation more realistic, the mobility shapes were synthesized by modal superposition using mode shapes obtained experimentally with a scanning laser Doppler vibrometer. A reduced and smoothed model, which takes advantage of the sinusoidal spatial pattern of structural mobility shapes and the polynomial frequency-domain pattern of the mobility shapes, is obtained. From the reduced model, smoothed curves with any desired frequency and spatial resolution can be produced whenever necessary. The procedure can be used either to generate nonmodal models or to compress the measured data prior to modal parameter extraction. © 1996 John Wiley & Sons, Inc.en
dc.relation.ispartofShock and Vibrationpt_BR
dc.date.issued1996pt_BR
dc.identifier.citationShock And Vibration. , v. 3, n. 2, p. 127 - 133, 1996.pt_BR
dc.language.isoenpt_BR
dc.description.volume3pt_BR
dc.description.issuenumber2pt_BR
dc.description.firstpage127pt_BR
dc.description.lastpage133pt_BR
dc.rightsfechadopt_BR
dc.sourceScopuspt_BR
dc.identifier.issn10709622pt_BR
dc.identifier.urlhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0001488558&partnerID=40&md5=c395ff77875f9df9f7d33c6875aaad2ept_BR
dc.date.available2015-06-26T17:03:34Z
dc.date.available2015-11-26T14:19:03Z-
dc.date.accessioned2015-06-26T17:03:34Z
dc.date.accessioned2015-11-26T14:19:03Z-
dc.description.provenanceMade available in DSpace on 2015-06-26T17:03:34Z (GMT). No. of bitstreams: 1 2-s2.0-0001488558.pdf: 3438764 bytes, checksum: ee4b473821a84ecafad4bdac9a7f17fc (MD5) Previous issue date: 1996en
dc.description.provenanceMade available in DSpace on 2015-11-26T14:19:03Z (GMT). No. of bitstreams: 2 2-s2.0-0001488558.pdf: 3438764 bytes, checksum: ee4b473821a84ecafad4bdac9a7f17fc (MD5) 2-s2.0-0001488558.pdf.txt: 26812 bytes, checksum: 4ed45d4c539711bbd84ebcb380a212fc (MD5) Previous issue date: 1996en
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/95605
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/95605-
dc.identifier.idScopus2-s2.0-0001488558pt_BR
dc.description.referenceArruda, J.R.F., Surface Smoothing and Partial Spatial Derivatives Computation Using a Regressive Discrete Fourier Series (1992) Mechanical Systems and Signal Processing, 6 (1), pp. 41-50pt_BR
dc.description.referenceArruda, J.R.F., Spatial Domain Modal Analysis of Lightly Damped Structures Using Laser Velocimeters (1993) Journal of Vibration and Acoustics, 115 (3), pp. 225-231pt_BR
dc.description.referenceArruda, J.R.F., Mitchell, L.D., Sun, F., Spatial Domain Techniques for Modal Analysis Using a Laser Doppler Velocimeter (1992) Proceedings of the X International Modal Analysis Conference, pp. 656-664. , San Diego, CApt_BR
dc.description.referenceDippery, K.D., Phillips, A.W., Allemang, R.J., Condensation of the Spatial Domain in Modal Parameter Estimation (1994) Proceedings of the XII International Modal Analysis Conference, pp. 818-824. , Honolulu, Hawaiipt_BR
dc.description.referenceEwins, D.E., (1984) Modal Testing: Theory and Practice, , Research Studies Press, Letchworth, Hertfordshire, Englandpt_BR
dc.description.referenceHalvorsen, W.G., Barney, P.S., Brown, D.L., Developing Impedance-Type Models of Structural/Acoustic Systems (1991) Sound and Vibration, 25 (8), pp. 18-26pt_BR
dc.description.referenceHuang, T.S., (1981) Two-Dimensional Digital Signal Processing II - Transforms and Median Filters, , Springer-Verlag, Berlin, Germanypt_BR
dc.description.referenceLi, W.X., Mitchell, L.D., Lu, M., Non-Modal Method of Structure Dynamic Response Identification for a Prototype Commercial (1993) Proceedings of the XII International Modal Analysis Conference, pp. 255-261. , Honolulu, HIpt_BR
dc.description.referenceLyon, R.H., (1975) Statistical Energy Analysis, , The MIT Press, Cambridge, MApt_BR
dc.description.referenceShih, C.Y., Tsuei, Y.G., Allemang, R.J., Brown, D.L., A Frequency-Domain Global Parameter Estimation Method for Multiple Reference Frequency Response Measurements (1988) Mechanical Systems and Signal Processing, 2 (4), pp. 349-365pt_BR
dc.description.referenceSun, F.P., Mitchell, L.D., Arruda, J.R.F., Mode Decoupling Considerations in Mode Shape Measurements of a Plate with Monoexcitation and Laser Doppler Vibrometer (1993) Experimental Techniques, 17 (4), pp. 31-37pt_BR
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-0001488558.pdf3.36 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.