Abstract
Steady-state nonlinear motion confinement is experimentally studied in a system of weakly coupled cantilever beams with active stiffness nonlinearities. Quasi-static swept-sine tests are performed by periodically forcing one of the beams at frequencies close to the first two closely-spaced modes of the coupled system, and experimental nonlinear frequency response curves for certain nonlinearity levels are generated. Of particular interest is the detection of strongly localized steady-state motions, wherein vibrational energy becomes spatially confined mainly to the directly excited beam. Such motions exist in neighborhoods of strongly localized anti-phase nonlinear normal modes (NNMs) which bifurcate from a spatially extended NNMs of the system. Steady-state nonlinear motion confinement is an essentially nonlinear phenomenon with no counterpart in linear theory, and can be implemented in vibration and shock isolation designs of mechanical systems.
Original language | English (US) |
---|---|
Pages | 683-693 |
Number of pages | 11 |
State | Published - 1995 |
Externally published | Yes |
Event | Proceedings of the 1995 ASME Design Engineering Technical Conference. Part A-1 - Boston, MA, USA Duration: Sep 17 1995 → Sep 20 1995 |
Other
Other | Proceedings of the 1995 ASME Design Engineering Technical Conference. Part A-1 |
---|---|
City | Boston, MA, USA |
Period | 9/17/95 → 9/20/95 |
ASJC Scopus subject areas
- General Engineering