This work experimentally investigates the impact of nonlinearity on macromechanical parametric amplification. For a strong cubic stiffness nonlinearity we observe jumps in gain (ratio of steady-state vibration amplitude of the externally and parametrically excited system, to vibration amplitude of the externally excited only system) as function of the phase between the external and parametric excitation. These jumps occur at different phase values dependent on up- and downsweeps. Furthermore, an increasing asymmetric phase-gain relationship was observed for strong nonlinearity.
|Title of host publication||ENOC 2014 - Proceedings of 8th European Nonlinear Dynamics Conference|
|Editors||Horst Ecker, Alois Steindl, Stefan Jakubek|
|Number of pages||2|
|Publisher||Vienna University of Technology|
|Publication status||Published - 2014|
|Event||8th European Nonlinear Dynamics Conference - Vienna, Austria|
Duration: 6 Jul 2014 → 11 Jul 2014
Conference number: 8
|Conference||8th European Nonlinear Dynamics Conference|
|Period||06/07/2014 → 11/07/2014|
Neumeyer, S., van de Looij, R., & Thomsen, J. J. (2014). Jumps and bi-stability in the phase-gain characteristics of a nonlinear parametric amplifier. In H. Ecker, A. Steindl, & S. Jakubek (Eds.), ENOC 2014 - Proceedings of 8th European Nonlinear Dynamics Conference Vienna University of Technology.