Topic
Constrained-layer damping
About: Constrained-layer damping is a research topic. Over the lifetime, 795 publications have been published within this topic receiving 15758 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a mathematical model based on Timoshenko beam assumption for a rotating cylindrical shaft with constrained layer damping treatment is developed, which is applied to study the effect of some geometric and material parameters on the flexural stiffness and damping of the shaft.
Abstract: A mathematical model, based on Timoshenko beam assumption, for a rotating cylindrical shaft with cylindrical constrained layer damping treatment is developed. The model is developed for a shaft made of composite materials, and treated with a cylindrical constrained layer damping partially covering the length span of the shaft. The discrete equations of motion are developed using two methods: the finite element method and the assumed mode method. The developed equations are applied to study the effect of some geometric and material parameters on the flexural stiffness and damping of the shaft, with emphasis on the coverage length of the cylindrical constrained layer treatment. The effect of the spinning speed is also considered. Initial results indicate that, for the special case covered in this paper, the finite element method renders accurateresults, whiletheassumed modemethod engenderserroneous results. Theresults, in general, conclude that the partial cylindrical constrained layer damping treatment, suggested in this paper, is not promising.
12 citations
TL;DR: In this paper, the vibration of a plate partially covered with a passive constrained layer damping (PCLD) patch is studied from an energetic point of view, where the damped plate is excited by an acoustic plane wave.
11 citations
TL;DR: In this paper, the authors used anisotropic compositivities to enhance the chatter stability of boring bars using isotropic metallic materials, which exhibit extremely poor chatter suppression ability.
Abstract: Traditional boring bars are generally made up of isotropic metallic materials and exhibit extremely poor chatter suppression ability. For enhancing the chatter stability, using anisotropic composit...
11 citations
01 Apr 2008
TL;DR: In this paper, a cellular automaton (CA) based approach for locating constrained layer damping (CLD) on any type of structure is presented. But the approach is not suitable for more complicated structure shapes or structures.
Abstract: Constrained layer damping (CLD) is a highly effective passive vibration control strategy if optimized adequately. Factors controlling CLD performance are well documented for the flexural modes of beams but not for more complicated mode shapes or structures. The current paper introduces an approach that is suitable for locating CLD on any type of structure. It follows the cellular automaton (CA) principle and relies on the use of finite element models to describe the vibration properties of the structure. The ability of the algorithm to reach the best solution is demonstrated by applying it to the bending and torsion modes of a plate. Configurations that give the most weight-efficient coverage for each type of mode are first obtained by adapting the existing 'optimum length' principle used for treated beams. Next, a CA algorithm is developed, which grows CLD patches one at a time on the surface of the plate according to a simple set of rules. The effectiveness of the algorithm is then assessed by comparing the generated configurations with the known optimum ones.
11 citations
TL;DR: In this paper, a finite element (FE) is formulated based on an extension of previous FE models for studying constrained layer damping (CLD) in beams, which can be extended to cases in which the CLD structure has more than three layers.
11 citations