Transient and harmonic response of a sandwich with partial constrained layer damping: A parametric study

Khalfi, Boubaker; Ross, Annie

doi:10.1016/j.compositesb.2015.12.037

Cited by 19 publications

(4 citation statements)

References 16 publications

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“…Considering serious corrosion in sea-water occasions, Shi et al [10] prepared a new type of CLD material to estimate the effect of temperature and stiffness of constrained layer on its damping behavior. Considering both of the harmonic and transient regimes response, Khalfi et al [11] discussed the influences of CLD thickness, patch position and width on loss factors of a simply supported sandwich plate. Xu et al [12] investigated the linear vibration characteristics of FMLs plate treated CLD by utilizing classical laminates theory.…”

Section: Introductionmentioning

confidence: 99%

An amplitude-dependent vibration model of thin plate made of fiber metal laminates with partial constraint layer damping treatments

Pan

et al. 2022

Preprint

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In this study, considering the amplitude-dependence, a nonlinear vibration model of fiber metal laminates thin plate treated with partial constraint layer damping treatments is proposed. Based on the Jones-Nelson nonlinear theory, the model is established by deducing the stress-strain relationships among four layers including fiber layer, metal layer, viscoelastic layer and constraint layer. Then, the nonlinear vibration characters are solved by utilizing the energy method and the Newton-Raphson technique. Next, the damping character is acquired based on complex modulus method. The experimental example of a TA2/TC500 fiber metal laminates plate treated stainless steel/Zn-33 constraint layer damping is performed to validate the presented nonlinear vibration model. Besides, the affections of the treating factors on the nonlinear vibration characteristics of FMLs plate is discussed as well.

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Section: Introductionmentioning

confidence: 99%

An amplitude-dependent vibration model of thin plate made of fiber metal laminates with partial constraint layer damping treatments

Pan

et al. 2022

Preprint

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“…CLD dissipates vibration energy by the shear deformation in the viscoelastic layer according to the relative motion between the host and the constraining layer. Investigations on the stiffness of the constraining layer, the thicknesses of constraining and viscoelastic layers, the coverage area, and the loss factor of viscoelastic layer have illuminated the mechanisms of optimal design and implementation of CLD for many applications [1][2][3][4]. The studies find that optimized CLD layouts introduce only a small added weight [5,6] while concurrently providing effective panel vibration dissipation [6].…”

Section: Introductionmentioning

confidence: 99%

“…The studies find that optimized CLD layouts introduce only a small added weight [5,6] while concurrently providing effective panel vibration dissipation [6]. The damping may be tailored by the shear modulus of the viscoelastic layer [7] as well as by the positions of CLD patches [4]. On the other hand, CLD methods of vibration control are often only effective in the mid to high frequency range, whereas many panel vibration concerns are concentrated in the lower frequency regime with wavelengths longer than the size of typical CLD solutions.…”

Section: Introductionmentioning

confidence: 99%

Structurally-integrated resonators for broadband panel vibration suppression

Yeh

Harne²

2020

Smart Mater. Struct.

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There is limited understanding on interaction mechanisms that govern vibration attenuation when a small coverage of lightweight resonators are applied to practical engineering structures. To shed light on the unknowns, this research investigates lightweight elastomeric half cylindrical resonators attached to an aluminum panel using a small mass ratio around 3% and only around 1.7% coverage over the panel area. Finite element modeling of the system dynamics is complemented by corresponding experimental undertaking. The eigenfrequencies and eigenmodes of the resonators are scrutinized for the respective contributions provided towards broadband panel vibration suppression. The first order eigenmodes of the resonators are found to exert great influence on the starting mode for greater vibration attenuation, which may be tuned by the Young's modulus of the resonators. The concept of displacement polarization is established to probe how the resonator eigenmodes quantitatively contribute to attenuate the forced panel vibration. This study reveals how flexural panel vibration may be attenuated by transferring the vibration from the panel to resonators by virtue of modal interaction, and prepares a generalized analytical technique that may be used by other researchers studying multi-modal interactions between host structures and applied resonators. These findings may guide the future development of lightweight resonators with a small coverage area for vibration suppression in engineering applications.

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“…This optimization program was used in 2D/3D beam structures. Khalfi, et al 22 presented a parametric study of partial constraining layer damping (PCLD) characteristics on the responses of a rectangular plate. The obvious suppressing vibration effects were obtained by optimization.…”

Section: Introductionmentioning

confidence: 99%

Distribution Optimization of Constrained Damping Materials Covering on Typical Panels Under Random Vibration

Liu¹,

Xu²,

Shi³

et al. 2018

The International Journal of Acoustics and Vibration

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This paper studies topology optimization of metallic and composite panels of three different configurations (flat, three-bay and 3×3 grid) covered by the constrained damping materials considering first modal loss factors. The vibration experiments seek to obtain the first modal loss factor and first modal frequency for the aforementioned panels, and corresponding finite element (FE) simulations are completed using commercial software ABAQUS R . According to simulation results, the distribution of constrained damping materials is optimized with evolutionary structural optimization (ESO) method developed using MATLAB. The results show that the first modal loss factors of optimized panels are reduced slightly if the constrained damping material is removed by 50%. Under the base excitation near each first modal frequency, the maximum root mean square of Von Mises equivalent stress (RMISES) of optimized flat panels and 3×3 grid stiffened panels decreases compared with panels without constrained damping materials. However, the maximum RMISES value of optimized three-bay stiffened panels nearly remains unchanged due to the configuration type of the stiffeners. These results conclude that the three-bay stiffened panel is the best to reduce the maximum RMISES value of at base structure with the same additional mass

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Transient and harmonic response of a sandwich with partial constrained layer damping: A parametric study

Cited by 19 publications

References 16 publications

An amplitude-dependent vibration model of thin plate made of fiber metal laminates with partial constraint layer damping treatments

An amplitude-dependent vibration model of thin plate made of fiber metal laminates with partial constraint layer damping treatments

Structurally-integrated resonators for broadband panel vibration suppression

Distribution Optimization of Constrained Damping Materials Covering on Typical Panels Under Random Vibration

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