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Abstract
The process of characterizing a nonlinearity can be defined as determining three things; location, type, and functional form. In the present study it is investigated if the random decrement technique can be used in an outputonly setting for one of these; localizing nonlinear behavior. The localization is performed through a novel random decrement analysis procedure of the time history of each response measurement in a multiple degreesoffreedom system. The analysis will detect nonlinear behavior, if present, and indicate the degree of the nonlinear behavior. A numerical test case is investigated using the analysis procedure, where a localized nonlinear element is located at various discrete locations of a Tshaped structure. Two types of nonlinearities, and three locations are investigated. Results indicate that it is not possible to explicitly determine at which degreeoffreedom a nonlinear element resides. It is, however, possible to determine which degreesoffreedom that are affected by the nonlinear element.
Originalsprog  Engelsk 

Titel  Proceedings of ISMA2020 
Redaktører  W. Desmet, B. Pluymers, D. Moens, S. Vandemaele 
Publikationsdato  2020 
Sider  22312238 
ISBN (Elektronisk)  9789082893113 
Status  Udgivet  2020 
Begivenhed  International Conference on Noise and Vibration Engineering  Varighed: 7. sep. 2020 → 9. sep. 2020 Konferencens nummer: 29 
Konference
Konference  International Conference on Noise and Vibration Engineering 

Nummer  29 
Periode  07/09/2020 → 09/09/2020 
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Localizing nonlinear behavior from response measurements
Karsten Krautwald Vesterholm (Oplægsholder)
7. sep. 2020 → 9. sep. 2020Aktivitet: Foredrag og mundtlige bidrag › Konferenceoplæg