期刊
JOURNAL OF SOUND AND VIBRATION
卷 351, 期 -, 页码 299-310出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2015.04.035
关键词
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资金
- National Physical Science Consortium (NPSC) Fellowship
- Fonds de la Recherche Scientifique - FNRS
- European Union (ERC) [NOVIB 307265]
The objective of the present study is to explore the connection between the nonlinear normal modes of an undamped and unforced nonlinear system and the isolated resonance curves that may appear in the damped response of the forced system. To this end, an energy balance technique is used to predict the amplitude of the harmonic forcing that is necessary to excite a specific nonlinear normal mode. A cantilever beam with a nonlinear spring at its tip serves to illustrate the developments. The practical implications of isolated resonance curves are also discussed by computing the beam response to sine sweep excitations of increasing amplitudes. (C) 2015 Elsevier Ltd. All rights reserved.
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