Transcription of Journal of Sound and Vibration - Brüel & Kjær
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Journal of Sound and Vibration - Brüel & Kjær
Force transmissibility versus displacement Lagea, Nevesa,n, Maiaa, D. TcherniakbaLAETA, IDMEC, Instituto Superior T cnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, PortugalbBr el & Kjaer Sound and Vibration Measurement A/S, Skodsborgvej 307, DK 2850 Naerum, Denmarkarticle infoArticle history:Received 5 June 2013 Received in revised form18 May 2014 Accepted 19 May 2014 Handling Editor: H. OuyangabstractIt is well-known that when a single-degree-of-freedom (sdof) system is excited by acontinuous motion of the foundation, the force transmissibility, relating the force transmittedto the foundation to the applied force, equals the displacement transmissibility. Recentdevelopments in the generalization of the transmissibility to multiple-degree-of-freedom(mdof) systems have shown that similar simple and direct relations between both types oftransmissibility do not appear naturally from the definitions, as happens in the sdof this paper, the authors present their studieson the conditions underwhich it is possibleto establish a relation between force transmissibility and displacement transmissibility formdof systems.
detection [22,23], operational modal analysis [24], evaluation of unmeasured frequency response functions (FRFs) [25,26], and force identification [27,28]. Another example is the problem of transfer-path analysis in vibroacoustics, where classical
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