Vibro-acoustic characteristics of viscoelastic sandwich panel: effect of inherent damping

Reddy, R. Kiran Kumar; Arunkumar, M.; Bhagat, Vinod; Reddy, M. B. S. Sreekara

doi:10.1007/s40435-020-00654-7

Cited by 14 publications

(4 citation statements)

References 21 publications

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“…Reddy et al. [106] inspected the acoustic characteristics of a composite sandwich panel equipped with inherent material damping of AL facings and FRP. They employed the modal strain energy technique to obtain the model damping ratio at each mode.…”

Section: Methodsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

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Section: Methodsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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“…Assuming a small perturbation in the equilibrium position, the linearized equation of Eq. ( 26) can be expressed as [38]   …”

Section: Modal Analysismentioning

confidence: 99%

Dynamic analysis of a rigid-flexible inflatable space structure coupled with control moment gyroscopes

et al. 2023

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The vibration generated by the inflatable structure after deployment has a great impact on the performance of the payloads. In this paper, the influence of the control moment gyroscope (CMG) on the dynamic responses and characteristics of an inflatable space structure is studied, based on the flexible multibody dynamics in combination of the absolute nodal coordinate formulation (ANCF) and the natural coordinate formulation (NCF). Firstly, the ANCF and NCF are used to accurately describe the large deformations and large overall motions of flexible inflatable tubes and rigid satellites, respectively. Afterwards, by using the Lagrange equation, a rigid body dynamic model of the CMG is established in detail, which can be attached to and coupled with any flexible bodies without any assumptions. Then, the orbital dynamic equations of the inflatable space structure coupled with distributed CMGs are obtained by considering the effects of Coriolis force, centrifugal force, and gravity gradient through coordinate transformation. The dynamic characteristics of the inflatable space structure are also analyzed by deriving the eigenvalue problem of a flexible multibody system. Finally, the accuracy of the CMG dynamic model is verified via a classic heavy top example. And several numerical examples are presented to study the influence of the magnitudes and directions of the rotor angular momentum of the CMG on the dynamic responses and characteristics of the inflatable space structure.

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“…Han et al (2017) studied the free vibration and acoustic response of flexible sandwich panels under thermal environment based on the mode superposition principle and Rayleigh integral method. Reddy et al (2021) analyzed the influence of vibro-acoustic characteristics of fiber reinforced polymer (FRP) core sandwich panels with inherent material damping changes. Li et al (2018) studied the vibration and acoustic characteristics of clamped rectangular sandwich plates under high temperature environment by using the modal superposition method based on the piecewise shear deformation theory.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibro-acoustic characteristics of functionally graded sandwich microplates under thermal-electric effects

Li,

Fan,

Hao

et al. 2024

Journal of Intelligent Material Systems and Structures

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Based on the hyperbolic tangent parabola mixed shear deformation theory, the paper studied the sound radiation and the sound insulation of the functionally graded (FG) sandwich microplates under thermal-electric effects. The sandwich plate is composed of piezoelectric skin layers and FGM core layer. By using Hamilton’s principle, a size-dependent model considering the thermal-piezoelectric effects are established. The acoustic response and sound insulation are calculated with Rayleigh integral and solid-fluid coupling conditions. The accuracy of the presented method is verified by the numerical simulations. Then the effects of various parameters on the vibro-acoustic characteristics are analyzed and discussed. Numerical results show that the temperature variations, the length scale parameter to thickness ratio and the gradient index have great impacts on the FG sandwich microplates.

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Vibro-acoustic characteristics of viscoelastic sandwich panel: effect of inherent damping

Cited by 14 publications

References 21 publications

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Dynamic analysis of a rigid-flexible inflatable space structure coupled with control moment gyroscopes

Analysis of vibro-acoustic characteristics of functionally graded sandwich microplates under thermal-electric effects

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