Multi-frequency nonlinear energy transfer from linear oscillators to mdof essentially nonlinear attachments

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• 作者：Tsakirtzis ; Stylianos ; Kerschen ; Gaetan ; Panagopoulos ; Panagiotis N. ; Vakakis ; Alexander F.
• 刊名：Journal of Sound and Vibration
• 出版年：2005
• 出版时间：July 6, 2005
• 年：2005
• 卷：285
• 期：1-2
• 页码：483-490
• 全文大小：313 K

文摘

We report on multi-frequency energy transfer from a two-mode, initially excited linear system to a multi-degree-of-freedom (mdof) essentially nonlinear attachment. This occurs through simultaneous resonance interactions of both linear modes with a set of nonlinear normal modes (NNMs) of the attachment, and is studied utilizing numerical wavelet transforms. The multi-frequency nonlinear energy transfer discussed herein differs from multi-frequency energy transfer caused by resonance capture cascading where sequential energy transfer from a set of linear modes to single-dof nonlinear attachments takes place.