OPTIMIZATION OF DYNAMIC VIBRATION ABSORBERS BASED ON EQUAL-PEAK THEORY
AUTOR(ES)
Piccirillo, Vinícius
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
25/04/2019
RESUMO
Abstract The present paper proposes a new procedure to determine the optimal parameters of a dynamic vibration absorber (DVA), considering both damped and undamped primary system. The DVA design is formulated as an optimization problem in which the objective function is constructed based on Den Hartog's equal-peak method. The DVA parameters are selected to minimize the response of the primary system when it is subjected to harmonic force or base motion. Firstly, we propose a numerical strategy based on Frequency Response Curve (FRC) in which the parameters of the absorber are updated by minimizing the objective function. The results are presented for a set of reference parameters, which demonstrate the feasibility of the proposed method for determining the optimal parameters of the absorber for both excitations. Taking into account the system response with respect to reference parameters, the bilinear interpolation technique was employed in order to obtain explicit formulas of the damping and frequency ratios of the DVA.
Documentos Relacionados
- Large amplitude free vibration of micro/nano beams based on nonlocal thermal elasticity theory
- Vibration Analysis of a Magnetoelectroelastic Rectangular Plate Based on a Higher-Order Shear Deformation Theory
- Investigation of Size-Dependency in Free-Vibration of Micro-Resonators Based on the Strain Gradient Theory
- Controle de vibração em reatores elétricos através de absorvedores dinâmicos viscoelásticos
- Three dimensional vibration and bending analysis of carbon nanotubes embedded in elastic medium based on theory of elasticity