The forced dynamics of non-smooth oscillators have not yet been sufficiently investigated, when damping is simultaneously due to friction and impact. Because of the theoretical and practical interest of this type of systems, an effort is made in this paper to lighten the behaviour of a single-degree-of-freedom oscillator colliding with a hysteretic obstacle and excited by an harmonic driving force and by a moving base with constant velocity. A friction-contact model has been proposed which allows simulating an exponential velocity-dependent friction law, and a deformable (hysteretic) obstacle. This model has been numerically tested via a sample application.
Forced response of a SDOF friction oscillator colliding with a hysteretic obstacle / Andreaus, Ugo; Casini, Paolo. - ELETTRONICO. - 6 B (CD ROM):(2001), pp. 1301-1306. (Intervento presentato al convegno 18th Biennial Conference on Mechanical Vibration and Noise tenutosi a Pittsburgh (Pennsylvania) nel September 9-12).
Forced response of a SDOF friction oscillator colliding with a hysteretic obstacle.
ANDREAUS, Ugo;CASINI, Paolo
2001
Abstract
The forced dynamics of non-smooth oscillators have not yet been sufficiently investigated, when damping is simultaneously due to friction and impact. Because of the theoretical and practical interest of this type of systems, an effort is made in this paper to lighten the behaviour of a single-degree-of-freedom oscillator colliding with a hysteretic obstacle and excited by an harmonic driving force and by a moving base with constant velocity. A friction-contact model has been proposed which allows simulating an exponential velocity-dependent friction law, and a deformable (hysteretic) obstacle. This model has been numerically tested via a sample application.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
