Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: stick-slip vibration

Sortuj według:

Ogranicz wyniki do:

Dynamics of a kinematically excited system with chosen friction models

Awrejcewicz J., Grzelczyk D., Pyryev Y.

Vibrations in Physical Systems

2008

Vol. 23

59--64

Stick-slip vibrations in a mechanical system with dry friction and kinematical excitation with chosen friction models in a stick phase are studied in this work. Although there are numerous works in the scientific literature dedicated to stick-slip vibrations, a rigid body lying on a belt which moves at non-constant velocity is less investigated. A novel friction model is used and its advantages, in comparison to the often applied friction models, are illustrated. The behavior of the system is monitored via standard motion analysis in the system’s phase space.

Active Damping of Stick-Slip Self-Excited Vibration for Selected External Excitation Frequencies

Ryczek B., Bogacz R.

Machine Dynamics Problems

2002

Vol. 26, No. 1

35-42

There are numerous possibilities of active control of vibration in mechanical systems. Nevertheless, a very limited number of them can be applied to self-excited systems. This paper presents mechanisms for the generation of stick-slip self-excited vibration of the system with a relatively complicated, history dependent friction mode. The system is additionally influenced by an external harmonic excitation. The experimentally identified friction model enables the description of various cases of stationary and transient motion. For the majority of parameters the values of the external excitation, the amplitude of the system motion is greater than without it. But according to the theory, for the particular frequency of the external excitation, it is possible to minimise the amplitude more than twice. A discussion on the appropriate choice of excitation frequency is given in the paper.