Operational modal analysis (original) (raw)
Ambient modal identification, also known as operational modal analysis (OMA), aims at identifying the modal properties of a structure based on vibration data collected when the structure is under its operating conditions, i.e., no initial excitation or known artificial excitation. The modal properties of a structure include primarily the natural frequencies, damping ratios and mode shapes. In an ambient vibration test the subject structure can be under a variety of excitation sources which are not measured but are assumed to be 'broadband random'. The latter is a notion that one needs to apply when developing an ambient identification method. The specific assumptions vary from one method to another. Regardless of the method used, however, proper modal identification requires that the spect
| Property | Value |
|---|---|
| dbo:abstract | Ambient modal identification, also known as operational modal analysis (OMA), aims at identifying the modal properties of a structure based on vibration data collected when the structure is under its operating conditions, i.e., no initial excitation or known artificial excitation. The modal properties of a structure include primarily the natural frequencies, damping ratios and mode shapes. In an ambient vibration test the subject structure can be under a variety of excitation sources which are not measured but are assumed to be 'broadband random'. The latter is a notion that one needs to apply when developing an ambient identification method. The specific assumptions vary from one method to another. Regardless of the method used, however, proper modal identification requires that the spectral characteristics of the measured response reflect the properties of the modes rather than those of the excitation. (en) |
| dbo:wikiPageID | 41441485 (xsd:integer) |
| dbo:wikiPageLength | 8464 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1117761799 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Bayesian_inference dbr:Bayesian_operational_modal_analysis dbr:Modal_analysis dbr:Correlation_function dbr:Microtremor dbr:Damping_ratio dbr:Time_domain dbc:Wave_mechanics dbr:Modal_testing dbr:Spectral_density dbr:Frequency_domain dbr:Frequency_domain_decomposition dbr:Natural_frequency dbr:Ambient_Vibrations dbr:Ambient_vibrations dbr:Mode_shape dbr:Subspace_identification |
| dbp:wikiPageUsesTemplate | dbt:Reflist |
| dct:subject | dbc:Wave_mechanics |
| rdfs:comment | Ambient modal identification, also known as operational modal analysis (OMA), aims at identifying the modal properties of a structure based on vibration data collected when the structure is under its operating conditions, i.e., no initial excitation or known artificial excitation. The modal properties of a structure include primarily the natural frequencies, damping ratios and mode shapes. In an ambient vibration test the subject structure can be under a variety of excitation sources which are not measured but are assumed to be 'broadband random'. The latter is a notion that one needs to apply when developing an ambient identification method. The specific assumptions vary from one method to another. Regardless of the method used, however, proper modal identification requires that the spect (en) |
| rdfs:label | Operational modal analysis (en) |
| owl:sameAs | wikidata:Operational modal analysis https://global.dbpedia.org/id/Y3Pu |
| prov:wasDerivedFrom | wikipedia-en:Operational_modal_analysis?oldid=1117761799&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Operational_modal_analysis |
| is dbo:wikiPageRedirects of | dbr:Operational_Modal_Analysis dbr:Ambient_modal_identification |
| is dbo:wikiPageWikiLink of | dbr:Bayesian_operational_modal_analysis dbr:Operational_Modal_Analysis dbr:Ambient_modal_identification |
| is foaf:primaryTopic of | wikipedia-en:Operational_modal_analysis |