Novel Passive Vibration Control Methods for Aerostructures
Abstract
The principal goals of this project were the further analysis and the experimental demonstration of the phenomenon of nonlinear energy pumping (targeted energy transfer), in which the vibration of a structure following a transient disturbance is irreversibly localized to a preferred subsystem, termed a nonlinear energy sink, and dissipated there. The occurrence of energy pumping depends on the essential nonlinearity of the sink stiffness; that is, this stiffness must be nonlinearizable, with no linear term in its force-displacement relation. Two types of nonlinear energy sink (NES) have been investigated: Configuration I, in which the sink mass is coupled weakly an linearly to the primary structure and essentially nonlinearly to ground; and Configuration II, in which the coupling to the primary structure is essentially nonlinear but there is no connection of the sink to ground.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 05, 2005
- Accession Number
- ADA437415
Entities
People
- Lawrence A. Bergman
Organizations
- University of Illinois Urbana–Champaign