Free vibration and sound insulation of functionally graded honeycomb sandwich plates

Li, Fenglian; Yuan, Wenhao; Zhang, Chuanzeng

doi:10.1177/10996362211020440

Cited by 40 publications

(8 citation statements)

References 47 publications

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“…Hasheminejad and Jamalpoor [60] improved the diffuse STL across a smart hybrid double concentric sandwich circular cylindrical shell structure under internal and external air gap mean flows using multi-input multi-output (MIMO) sliding mode control (SMC). According to the hyperbolic tangent shear deformation assumption, Li et al [61] calculated the natural frequencies and STL of FG honeycomb sandwich plates.…”

Section: Introductionmentioning

confidence: 99%

Sound Transmission Loss of a Honeycomb Sandwich Cylindrical Shell with Functionally Graded Porous Layers

et al. 2022

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To examine the acousto-structural behavior of a sandwich cylindrical shell benefiting from hexagonal honeycomb structures in its core and functionally graded porous (FGP) layers on its outer and inner surfaces, a comprehensive study based on an analytical model which also considers the effect of an external flow is conducted. A homogenous orthotropic model is used for the honeycomb core while its corresponding material features are found from the modified Gibson’s equation. The distribution pattern of FGP parts is either even or logarithmic-uneven, and a special rule-of-mixture relation governs their properties. Based on the first-order shear deformation theory (FSDT), Hamilton’s principle is exploited to derive the final coupled vibro-acoustic equations, which are then solved analytically to allow us to calculate the amount of sound transmission loss (STL) through the whole structure. This acoustic property is further investigated in the frequency domain by changing a set of parameters, i.e., Mach number, wave approach angle, structure’s radius, volume fraction, index of functionally graded material (FGM), and different honeycomb properties. Overall, good agreement is observed between the result of the present study and previous findings.

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Section: Introductionmentioning

confidence: 99%

Sound Transmission Loss of a Honeycomb Sandwich Cylindrical Shell with Functionally Graded Porous Layers

et al. 2022

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“…One part of the sound energy is reflected, one part is absorbed and consumed, and another part is transmitted to the other side when a plane wave is incident on the surface of a material. 31 Liu et al 32 investigated sound properties of honeycomb structures filled with five different materials, and discovered that there are obvious differences in acoustic curves of honeycomb structures with different fillers. Therefore, sound properties of honeycomb filled structures heavily depend on the filler.…”

Section: Sound Insulation Of Hfgmentioning

confidence: 99%

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

Ge,

Xue,

Liu

et al. 2023

Polymer Composites

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Honeycomb composite with excellent mechanical–physical properties had attracted extensive attention. To achieve outstanding sound insulation while maximizing the high‐performance of honeycomb composite, this article reported a honeycomb composite structure filled with glass fiber (HFG) based on a paper‐making process and the corresponding sandwich structure. Pulping parameters, mechanical property, air permeability and sound insulation of HFG were analyzed. The results showed that the hanging index and settling height of glass fiber slurry were inversely proportional to the beating degree, which was beneficial for reducing the coefficient of variation (CV) of HFG with value of 4%–6%. The maximum improvement in tensile strength and bursting strength of HFG were 70% and 53%, respectively. In addition, sound transmission loss (STL) of HFG was proportional to cell size, density, filling amount and thickness of the honeycomb. Compared to HFG, sandwich structure consisting of HFG and glass fiber/hot melt fiber panels effectively improved STL, especially at low‐mid frequencies. It was also found that designing holes on the surface of sandwich structure could further improve STL in certain frequency bands. The structure offered a lightweight and high‐performance response for construction, transportation and infrastructure.Highlights This article designs a new type of honeycomb filled glass fiber via paper‐making process, aiming to improve the comprehensive performance of honeycomb. By the design of embedded structure, the maximum improvement in tensile strength and bursting strength of honeycomb were 70% and 53%, respectively. By designing perforated, embedded and laminated structures, sound insulation has been improved, while reducing material quality.

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“…Arunkumar et al (2018) mainly studied the vibro-acoustic response and STL characteristics of truss sandwich panels filled with polyurethane foam. Li et al (2022) analyzed the free vibration and sound insulation of FG honeycomb sandwich plates. Wang et al (2021) used the genetic algorithm to study the sound absorption performance of double-layer honeycomb structures, and optimized the sandwich structure.…”

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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Free vibration and sound insulation of functionally graded honeycomb sandwich plates

Cited by 40 publications

References 47 publications

Sound Transmission Loss of a Honeycomb Sandwich Cylindrical Shell with Functionally Graded Porous Layers

Sound Transmission Loss of a Honeycomb Sandwich Cylindrical Shell with Functionally Graded Porous Layers

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

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

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