A Frequency Domain Versus a Time Domain Identification Technique for Nonlinear Parameters Applied to Wire Rope Isolators

[+] Author and Article Information
Gaetan Kerschen, Vincent Lenaerts

LTAS–Vibrations et Identification des Structures, Université de Liège, Chemin des Chevreuils, 1 (Ba⁁t. B52), 4000 Liège, Belgiume-mail: g.kerschen@ulg.ac.be

Stefano Marchesiello, Alessandro Fasana

Dipartimento di Meccanica, Politecnico di Torino, 10129 Torino, Italy

J. Dyn. Sys., Meas., Control 123(4), 645-650 (Nov 06, 2000) (6 pages) doi:10.1115/1.1410368 History: Received November 06, 2000
Copyright © 2001 by ASME
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The system under examination
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(a) Acceleration transmissibility of the system. Load mass m2=2.2 kg, excitation level 8 Vrms (_, underlying linear system transmissibility by CRP;[[ellipsis]], linear method). (b) CRP estimated coefficient of the nonlinearity
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Estimated accelerance of the system. Load mass m2=2.2 kg, excitation level 8 Vrms (_, underlying linear system accelerance by CRP;[[ellipsis]], linear method). (a)H11 accelerance, (b)H21 accelerance
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Stiffness curve (a) 0.5 V rms, (b) 4 V rms
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Evolution of the MSE as a function of the type of the nonlinearity
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Measured and computed restoring force (a) 4 V rms, (b) 8 V rms




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