Nonlinear vibratory interactions between a linear and a non-smooth forced oscillator in the gravitational field. (15th May 2017)

• Record Type: Journal Article
• Authors: Lamarque, C.-H.; Ture Savadkoohi, A.; Charlemagne, S.; Abdoulhadi, P.
• Is Part Of: Mechanical systems and signal processing. Volume 89(2017)
• Page Start: 131
• Page End: 148
• Publication Date: 2017-05-15
• Subjects: Fast dynamics -- Slow dynamics -- Non-smooth -- Gravitational field -- Control -- Energy harvesting; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2016.09.043
• Languages: English
• ISSNs: 0888-3270

Abstract

Abstract: Nonlinear interactions of two coupled forced oscillators in the gravitational field are studied. The first oscillator that is supposed to be linear is coupled to a system which possesses multi-phase non-smooth non-conservative and restoring forces. The mass ratio of two oscillators is very small. Studying the system at fast time scale reveals an invariant manifold which depends on the amplitude of applied force on the non-smooth oscillator while slow dynamics of the system around its invariant demonstrates its equilibrium and singular points. Detected time multi-scale dynamics of the system can be endowed for designing proper controller and/or harvester non-smooth oscillators which presents final desirable periodic and/or strongly modulated responses. Abstract : Highlights: The overall system is in the gravitational field. One of the oscillators is non-smooth. Fast and slow dynamics of the system are investigated. Slow invariant manifold, equilibrium and singular points are detected. The non-smooth oscillator can be used as controller and/or energy harvester.