Topic
Dynamic Vibration Absorber
About: Dynamic Vibration Absorber is a research topic. Over the lifetime, 4764 publications have been published within this topic receiving 49429 citations.
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TL;DR: In this paper, a vibration characteristic analysis of a dual-lay-shaft dual-clutch transmission (DCT)-equipped powertrain system was performed, including a natural frequency evaluation and sensitivity studies.
12 citations
TL;DR: This paper explores a novel control scheme to handle multiple and time-varying frequencies, but again using a single-mass absorber, using a recent characteristic root approximation method, QPmR (Quasi-Polynomial Mapping Based Root finding).
12 citations
TL;DR: In this article, a semi-active control method is proposed to reduce vibration via the internal resonance and the magnetorheological elastomer (MRE) to establish a vibration energy transfer channel.
Abstract: The application of the magnetorheological elastomer (MRE) to nonlinear vibration control for a flexible arm is investigated in this paper. A semiactive control method is suggested to reduce vibration via the internal resonance and the MRE. To establish a vibration energy transfer channel, a tuned vibration absorber based on the MRE is developed. Through adjusting the coil current, the frequency of the vibration absorber can be readily controlled by the external magnetic field, thereby maintaining the internal resonance condition with the flexible arm. By the perturbation analysis, it is proven that the internal resonance can be successfully established between the flexible arm and the MRE vibration absorber, and the vibration energy of the flexible arm can be transferred to and dissipated by the MRE vibration absorber. Through numerical simulations, virtual prototyping simulations, and experimental investigation, it is verified that the proposed method and the suggested MRE vibration absorber are effective in controlling nonlinear vibration of the flexible arm.
12 citations
TL;DR: In this article, a coupled dynamic modelling of the guiding hoisting system is established, which includes the transverse-longitudinal-coupled vibration and the rotational vibration.
Abstract: A coupled dynamic modelling of the flexible guiding hoisting system is established, which includes the transverse-longitudinal-coupled vibration and the rotational vibration. Substituting v...
12 citations
01 Jan 2009
TL;DR: In this paper, the authors presented a tunable TVA with a closed-form isolation frequency that depends mainly on the port inertance, orifice flow coefficient, and tube parameters.
Abstract: This paper presents a novel Tuned Vibration Absorber (TVA) using Fluidic Flexible Matrix Composites (F2 MC). Fiber reinforcement of the F2 MC tube kinematically links the internal volume with axial strain. Coupling of a fluid-filled F2 MC tube through a fluid port to a pressurized air accumulator can suppress primary mass forced vibration at the tuned absorber frequency. 3-D elasticity model for the tube and a lumped fluid mass develops a 4th -order model of an F2 MC-mass system. The model provides a closed form isolation frequency that depends mainly on the port inertance, orifice flow coefficient, and the tube parameters. A small amount of viscous damping in the orifice increases the isolation bandwidth. With a fully closed orifice, the zero disappears and the system has a single resonant peak. Variations in the primary mass do not change the isolation frequency, making the F2 MC TVA robust to mass variations. Experimental results validate the theoretical predictions in showing a tunable isolation frequency that is insensitive to primary mass variations, and a 94% reduction in forced vibration response relative to the closed-valve case.Copyright © 2009 by ASME
12 citations