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Identification of weakly non-linear systems using equivalent linearization

✍ Scribed by H.J. Rice

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
463 KB
Volume
185
Category
Article
ISSN
0022-460X

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✦ Synopsis

Many vibrating systems when experimentally tested show weak non-linearity. In these cases linear response features such as natural frequencies and damping ratios though clearly identifiable, nevertheless show amplitude dependency. This paper describes an approach where the underlying non-linear differential equation governing the system may be identified. As input the equivalent linear response parameters measured over a range of amplitudes are used. A commercial aircraft trim panel mounting is considered as an example to demonstrate the technique.

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