Open AccessModeling and optimization of dynamic absorber with viscous friction
Author(s) -
Radu Ibănescu,
Mihaela Ibănescu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/997/1/012046
Subject(s) - dynamic vibration absorber , vibration , mechanical system , spring (device) , force dynamics , mechanics , work (physics) , steady state (chemistry) , control theory (sociology) , physics , computer science , structural engineering , acoustics , mechanical engineering , engineering , chemistry , control (management) , artificial intelligence
The vibrations coming from outer sources can cause, in the most cases, important disturbances in mechanical systems functioning. For this reason, solutions for the mitigation of these negative effects are sought, one of them being the use of vibration dynamic absorbers. In the present work, a damped vibrating mechanical system is considered and a dynamic absorber with damping attached to it. The mechanical system is acted by a sinusoidal force. The mechanical system behavior is modeled by a system of four state-space equations, having as input data the outer force and as output data the elongations of the vibrating motions for the two masses, corresponding to the original system and to the dynamic absorber, respectively. In this paper, the analytical steady state solution for system functioning is determined. The absorber effect can be optimized by using this solution. For this purpose, a soft in MATLAB environment is conceived, soft which offers the possibility of computing the mass, the spring elastic constant and the absorber coefficient of viscous friction, so that the amplitude of the original system oscillations, caused by the input force, to be minimal.