Abstract
A theoretical and experimental investigation is presented on the intermodal coupling between the flexural vibration modes of a single clamped-clamped beam. Nonlinear coupling allows an arbitrary flexural mode to be used as a self-detector for the amplitude of another mode, presenting a method to measure the energy stored in a specific resonance mode. The observed complex nonlinear dynamics are quantitatively captured by a model based on coupling of the modes via the beam extension; the same mechanism is responsible for the well-known Duffing nonlinearity in clamped-clamped beams.
Original language | English |
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Article number | 117205 |
Journal | Physical Review Letters |
Volume | 105 |
Issue number | 11 |
DOIs | |
State | Published - 10 Sep 2010 |
Externally published | Yes |