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WORKING GROUP 3—IDENTIFICATION OF NON-LINEAR SYSTEMS

✍ Scribed by J.C. GOLINVAL; G. KERSCHEN; V. LENAERTS; F. THOUVEREZ; P ARGOUL

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
66 KB
Volume
17
Category
Article
ISSN
0888-3270

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✦ Synopsis

Researchers in structural dynamics have long recognised the importance of diagnosing and modelling non-linearity. The last 20 years have witnessed a shift in emphasis from single degree-of-freedom (sdof) to multi-degree-of-freedom (mdof) non-linear structural dynamics. The main feature of the program of COST F3 Working Group 3 was to identify the behaviour of a structure which exhibits a localised non-linear component. Inside this working group, two benchmarks were defined and studied intensively, thereby allowing to evaluate different identification methods and compare their efficiency and specificity. For this purpose, a large amount of data (time and frequency measurements) was collected and proposed to COST F3 participants. The two benchmarks that are described in the following are:

* The VTT benchmark proposed by M. Juntunen from the VTT Technical Research of Finland;

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