{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:48:36Z","timestamp":1753879716599,"version":"3.41.2"},"reference-count":48,"publisher":"ASME International","issue":"5","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2014,10,1]]},"abstract":"<jats:p>In this paper, we address the identification of the spectral and spatial features of random flow excitations for multisupported tubular components such as steam generator tubes and nuclear fuel rods. In the proposed work, source identification is performed from a set of measured vibratory responses, in the following manner: (1) The modal response spectra and modeshape amplitudes at the measurement locations are first extracted through a blind decomposition of the physical response matrix, using the second order blind identification (SOBI) method; (2) the continuous modeshapes are interpolated from the identified values at the measurement locations; (3) the system modal parameters are identified from the modal responses using a simple single degree of freedom (SDOF) fitting technique; (4) inversion from the modal response spectra is performed for the identification of the modal excitation spectra; (5) finally, an equivalent physical excitation spectrum as well as the flow velocity profiles are estimated. The proposed approach is illustrated with identification results based on realistic numerical simulations of a multisupported tube under linear support conditions.<\/jats:p>","DOI":"10.1115\/1.4026980","type":"journal-article","created":{"date-parts":[[2014,3,1]],"date-time":"2014-03-01T14:31:02Z","timestamp":1393684262000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":4,"title":["Identification of Random Excitation Fields From Vibratory Responses With Application to Multisupported Tubes Excited by Flow Turbulence"],"prefix":"10.1115","volume":"136","author":[{"given":"Jose","family":"Antunes","sequence":"first","affiliation":[{"name":"ASME Member Centro de Ci\u00eancias e Tecnologias Nucleares, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, Bobadela LRS 2695-066, Portugal e-mail:"}]},{"given":"Laurent","family":"Borsoi","sequence":"additional","affiliation":[{"name":"CEA, DEN, DM2S, SEMT, Laboratoire d'Etudes de Dynamique, Gif-Sur-Yvette F-91191, France e-mail:"}]},{"given":"Xavier","family":"Delaune","sequence":"additional","affiliation":[{"name":"CEA, DEN, DM2S, SEMT, Laboratoire d'Etudes de Dynamique, Gif-Sur-Yvette F-91191, France e-mail:"}]},{"given":"Philippe","family":"Piteau","sequence":"additional","affiliation":[{"name":"CEA, DEN, DM2S, SEMT, Laboratoire d'Etudes de Dynamique, Gif-Sur-Yvette F-91191, France e-mail:"}]}],"member":"33","published-online":{"date-parts":[[2014,8,19]]},"reference":[{"volume-title":"Flow-Induced Vibration","year":"2001","key":"2019100620061299000_B1"},{"volume-title":"Flow-Induced Vibration of Circular Cylindrical Structures","year":"1987","key":"2019100620061299000_B2"},{"volume-title":"Flow-Induced Vibrations: Classifications and Lessons From Practical Experiences","year":"2014","key":"2019100620061299000_B3"},{"volume-title":"Fluid-Structure Interactions\u2014Slender Structures and Axial Flow: Volumes 1 and 2","year":"1998  2004","key":"2019100620061299000_B4"},{"volume-title":"Fluid-Structure Interactions: Cross-Flow-Induced Instabilities","year":"2011","key":"2019100620061299000_B5"},{"key":"2019100620061299000_B6","doi-asserted-by":"crossref","first-page":"851","DOI":"10.1006\/jsvi.1995.0174","article-title":"Experimental Characterization of Sliding and Impacting Friction Coefficients Between Steam Generator Tubes and AVB Supports","volume":"181","year":"1995","journal-title":"J. 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