Influence of partial constrained layer damping on the bending wave propagation in an impacted viscoelastic sandwich

Khalfi, Boubaker; Ross, Annie

doi:10.1016/j.ijsolstr.2013.07.023

Cited by 16 publications

(5 citation statements)

References 19 publications

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“…In this study, the following two conclusions can be drawn combining with time domain and vibration acceleration with the composite loss factors from finite element analysis: (1) Vibration reduction effect was remarkable with the fraction of coverage from 40% to 80% and the combined result showed that partial constrained layer damping structure with 80% damping layer coverage had better damping capacity. (2) The relationship between damping effect and coverage area was shown in Cloud charts of stress intensity, so the constraining and damping layer should lay on the middle of basement in the actual project.…”

Section: Discussionmentioning

confidence: 99%

“…In recent years, constrained damping structure (CLD) and partial constrained layer damping structure (PCLD) were widely studied because of the engineering applicability and flexible arrangement [1,2,3]. Lall [4] reported that damping effect was best by the coverage position on the side angle of structure, which illustrated that part coverage constraining layer was better than full coverage.…”

Section: Introductionmentioning

confidence: 99%

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Influence from Fraction of Coverage to the Damping Capacity of Partial Constrained Layer Damping Structure

Huang

Zhang

Lyu

et al. 2018

KEM

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In this paper, the influence from fraction of coverage to the damping capacity of partial constrained layer damping structure was studied by single point hammer test with two sides simply supported constraints and finite element simulation based on the theory of modal strain energy. Combining with time domain and vibration acceleration with the composite loss factors from finite element analysis, vibration reduction effect was remarkable with the fraction of coverage from 40% to 80%. The combined result showed that partial constrained layer damping structure with 80% damping layer coverage had better damping capacity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence from Fraction of Coverage to the Damping Capacity of Partial Constrained Layer Damping Structure

Huang

Zhang

Lyu

et al. 2018

KEM

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“…In the case of passive patches, the result is afected not only by the position of the patch's bending shape function but also by the loss factor of the viscoelastic layer, the shear coefcient, thickness, length, elastic modulus and thickness of the lower object to be controlled, and the length of the passive patch [13]. Tus, the efects of the previous parameters on the design of passive patches have been studied [13,15,16].…”

Section: Introductionmentioning

confidence: 99%

Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure

Hong,

Lee,

Kim

2024

Shock and Vibration

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When the thickness of a structure is reduced to decrease weight, it may experience structural vibration and disturbance. The use of passive patches is effective in addressing this issue when the loss factor is small or when space and weight are restricted. The greatest attenuation occurs when passive patches are used across the entire coverage area. However, passive patches of reasonable size must be affixed to ensure that they are effective in terms of cost and design. In this paper, the sum of squares’ value for the bending mode shape is used to determine the location of a small passive patch to achieve vibration damping for multiple modes. Under the condition of forced vibration, the modal contribution of each mode is obtained. Using this contribution as a weight, the optimal position of the passive patch is determined as the maximum value obtained in the form of a linear combination multiplied by the curvature of the beam. Simulation and experiment were used to test the efficacy of the location determined for passive patches. It was determined that, depending on the location of the passive patch, the peak amplitude at the natural frequency of each mode decreased significantly, validating the effectiveness of the design method.

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“…e application of plate structure in industry is very important [1]. Plane wave motion analysis has been researched in mechanical engineering in recent years [2].…”

Section: Introductionmentioning

confidence: 99%

Wave Motion Analysis in Plane via Hermitian Cubic Spline Wavelet Finite Element Method

Xue

Wang

et al. 2020

Shock and Vibration

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A plane Hermitian wavelet finite element method is presented in this paper. Wave motion can be used to analyze plane structures with small defects such as cracks and obtain results. By using the tensor product of modified Hermitian wavelet shape functions, the plane Hermitian wavelet shape functions are constructed. Scale functions of Hermitian wavelet shape functions can replace the polynomial shape functions to construct new wavelet plane elements. As the scale of the shape functions increases, the precision of the new wavelet plane element will be improved. The new Hermitian wavelet finite element method which can be used to simulate wave motion analysis can reveal the law of the wave motion in plane. By using the results of transmitted and reflected wave motion, the cracks can be easily identified in plane. The results show that the new Hermitian plane wavelet finite element method can use the fewer elements to simulate the plane structure effectively and accurately and detect the cracks in plane.

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Influence of partial constrained layer damping on the bending wave propagation in an impacted viscoelastic sandwich

Cited by 16 publications

References 19 publications

Influence from Fraction of Coverage to the Damping Capacity of Partial Constrained Layer Damping Structure

Influence from Fraction of Coverage to the Damping Capacity of Partial Constrained Layer Damping Structure

Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure

Wave Motion Analysis in Plane via Hermitian Cubic Spline Wavelet Finite Element Method

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