[en] The identi"cation of the dynamic characteristics of linear systems is now widely used and
interest in non-linear systems has increased. The objective of this paper is to demonstrate the
performance of the restoring force surface method as far as the identi"cation of non-linear
systems is concerned. The vibrations of a clamped beam are investigated for two di!erent
kinds of non-linearity. Firstly, the beam shows a non-linear behaviour characterized by
a piecewise linear sti!ness and secondly, the non-linearity comes from a bilinear sti!ness.
Both numerical and experimental results are presented.
(C) 2001 Academic Press
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Bibliography
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Worden K., Tomlinson G.R. (1989) Application of the restoring force surface method to nonlinear elements. Proceedings of the Seventh International Modal Analysis Conference 2:1347-1355.
Duym S., Schoukens J. (1995) Design of excitation signals for the restoring force surface method. Mechanical Systems and Signal Processing 9:139-158.
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