Theoretical and experimental vibration analysis of rotating beams with combined ACLD and Stressed Layer Damping treatment

Kumar, Sanjiv; Kumar, Rajiv

doi:10.1016/j.apacoust.2012.11.002

Cited by 18 publications

(5 citation statements)

References 27 publications

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“…Kumar and Singh [17] made different samples of beams with ACLD and PCLD treatments to investigate the ACLD and PCLD patch positions and coverage by experiment. Kumar and Kumar [18] performed theoretical and experimental vibration analyses of rotating beams with added ACLD and stress-layer damping treatment. Panda et al [19] investigated using active fiber-composite (AFC) materials for ACLD treatment to control vibrations of functionally graded (FG) beams.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Vibration Suppression of a Rotating Flexible Beam with Segmented Active Constrained Layer Damping Treatment

Wang,

Fang,

et al. 2023

Aerospace

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This paper uses high-order approximate coupling (HOAC) dynamics equations for the hub–beam system with segmented active constrained layer damping treatment (SACLD). To improve the damping characteristics of traditional active constrained layer damping (ACLD), the viscoelastic damping layer, and the piezoelectric constraining layer are cut at the same position. The damping characteristics of the structure are enhanced by increasing the shear strain of the viscoelastic damping layer. The finite element method is used to discretize the SACLD beam. The discontinuity of the SACLD beam element-to-element displacement achieves the notch. Based on the theory of rigid–flexible coupling dynamics, the dynamic responses of the SACLD rotating beam under different cases are studied. The results show that the segmentation method is not always effective. A SACLD beam provides better vibration suppression than an ACLD beam only when appropriate material and dimensional parameters are used. The influences of base-layer thickness, piezoelectric constraining layer thickness, viscoelastic damping-layer thickness, angular velocity, the viscoelastic damping-layer loss factor, and control gains on the vibration of the rotating flexible beam with SACLD treatment are also discussed.

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Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Vibration Suppression of a Rotating Flexible Beam with Segmented Active Constrained Layer Damping Treatment

Wang,

Fang,

et al. 2023

Aerospace

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“…It is trying to reduce the vibration hazards to minimum or to limit tolerable level. The against chatter can be classified as passive [4][5][6] and active (and semi-active) [7][8][9], the former being a one-time prior design and the latter using feedback control and automatic control. However, the cost of active and semi-active vibration damping techniques is too high, so their application is very slower in practice.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics of boring process considering unstable region of CNTs-reinforced composite cutter

Zhang

Wang

Feng

et al. 2022

Preprint

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The nonlinear dynamic analysis of rotating composite boring round bar containing carbon nanotubes (CNTs) in cutting system was investigated. Firstly, simplify the boring bar to the model of non-extendable rotary cantilever structure. Both the Halpin-Tsai model and micro-mechanical layering theory were used to predict the material properties of the boring round bar. Then the equations for the composite boring bar based on Euler Bernoulli shaft theory, including von Karman geometric nonlinearity are derived. The nonlinear dynamic model of cutting system including periodic regenerative chatter cutting force, periodic control force, viscoelastic and process damping is established by using Hamilton principle. The analytical solution of the steady-state response of the cutting system was subsequently obtained by the Galerkin approximation and the perturbation method of multiple time scales. Finally, the influences of carbon nanotube-related parameters, fiber volume fraction, fiber orientations, stacking sequences, damping coefficient and geometry properties of the cutter edge on the stability of the cutting system are evaluated. The obtained results show that the incorporation of CNTs has significant effect on the dynamic behavior of the cutting process. Increasing the process damping and changing the cutter edge and bar's cross section can improve stability of the cutting process. Furthermore, the unstable cutting region is sensitive to multi-valued properties generated by jumping.

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“…In recent years, ACLD treatment has been developing steadily. With the development of ACLD treatment, many excellent research results about ACLD have been published at home and abroad [ 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Vibration and Damping Analysis of Pipeline System Based on Partially Piezoelectric Active Constrained Layer Damping Treatment

Zhang

Rong

et al. 2021

Materials

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Pipelines work in serious vibration environments caused by mechanical-based excitation, and it is thus challenging to put forward effective methods to reduce the vibration of pipelines. The common vibration control technique mainly uses the installation of dampers, constrained layer damping materials, and an optimized layout to control the vibration of pipelines. However, the passive damping treatment has little influence on the low frequency range of a pipeline system. Active control technology can obtain a remarkable damping effect. An active constrained layer damping (ACLD) system with piezoelectric materials is proposed in this paper. This paper aims to investigate the vibration and damping effect of ACLD pipeline under fixed support. The finite element method is employed to establish the motion equations of the ACLD pipeline. The effect of the thickness and elastic modulus of the viscoelastic layer, the laying position, and the coverage of ACLD patch, and the voltage of the piezoelectric material are all considered. The results show that the best damping performance can be obtained by selecting appropriate control parameters, and it can provide effective design guidance for active vibration control of a pipeline system.

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Theoretical and experimental vibration analysis of rotating beams with combined ACLD and Stressed Layer Damping treatment

Cited by 18 publications

References 27 publications

Dynamic Modeling and Vibration Suppression of a Rotating Flexible Beam with Segmented Active Constrained Layer Damping Treatment

Dynamic Modeling and Vibration Suppression of a Rotating Flexible Beam with Segmented Active Constrained Layer Damping Treatment

Nonlinear dynamics of boring process considering unstable region of CNTs-reinforced composite cutter

Vibration and Damping Analysis of Pipeline System Based on Partially Piezoelectric Active Constrained Layer Damping Treatment

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