Studying thin film damping in a micro-beam resonator based on non-classical theories

Ghanbari, Mina; Hossainpour, Siamak; Rezazadeh, Ghader

doi:10.1007/s10409-015-0482-x

Cited by 15 publications

(8 citation statements)

References 36 publications

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“…3and 2into Eqs. (12) and (13) leads to: (15) Combing Eqs. (14) and (15), one can express the unknown parameters C and D as:…”

Section: Theorymentioning

confidence: 99%

“…They found that the highest STL can be obtained if the porous material is bounded to one faceplate and separated from the other one. Except from porous elastic materials, Chazot and Guyader [11], Doutres and Atalla [12], and Ghanbari et al [13] also conducted analytical investigations for acoustic properties of double panels with porogranular materials, thin film damping and multilayer porous blankets, while Zielinski et al [14] and Hu et al [15], Melon et al [16] numerically investigated the sound insulation and transmission properties of active hybrid sandwich panels with porous absorbent material layers in either active or passive mode. Compared with double panels separated by air, sandwich panels filled with porous sound absorbing materials have better sound insulation.…”

Section: Introductionmentioning

confidence: 99%

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On the low frequency acoustic properties of novel multifunctional honeycomb sandwich panels with micro-perforated faceplates

et al. 2019

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“…3and 2into Eqs. (12) and (13) leads to: (15) Combing Eqs. (14) and (15), one can express the unknown parameters C and D as:…”

Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the low frequency acoustic properties of novel multifunctional honeycomb sandwich panels with micro-perforated faceplates

et al. 2019

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“…[20] predicted the STL of simply supported finite double leaf panels with air cavity. Apart from the analysis of air cavity, numerous studies of sandwich panels with sound absorbing cores [9,10,27–37] have also been carried out. For example, Chazot and Guyader [27] calculated transmission loss of double panels filled with porogranular materials.…”

Section: Introductionmentioning

confidence: 99%

Sound transmission loss of sandwich panel with closed octahedral core

Wen

Wang

2019

Jnl of Sandwich Structures & Materials

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In this paper, an ultralightweight sandwich panel with closed octahedral core is proposed, which demonstrates excellent acoustic property of sound transmission loss as well as great mechanical performance. Simulation models are established with considerations of acoustic-structure interactions. The validity of simulation calculations is checked against experimental measurements with the tested specimens provided by additive manufacturing. Numerical discussions are conducted to demonstrate the effects of incident angles, topological parameters, and so on which should be helpful for practical design. This novel class of sandwich structure with closed octahedral core constructions shows promising engineering applications.

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“…In an other work, Ghanbari et al (2015a) by modeling the behavior of the micro fluid base on micropolar theory, presented a microsensor for measurement of a micro-scale fluid physical properties. Ghanbari et al (2015b) investigated thin film damping in a microbeam resonator in which the beam was modelled base on non-local elasticity theory. Nonlinear vibration analysis of fractional viscoelastic Euler-Bernoulli nanobeams based on Surface stress theory was studied by Oskouie et al (2017).…”

Section: Introductionmentioning

confidence: 99%

Studying Torsional Vibration of a Micro-shaft in a Micro-scale Fluid Media based on Non-classical Theories

Ghanbari

Hossainpour

Rezazadeh

2019

Lat. Am. j. solids struct.

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In this paper, torsional vibration of a micro-shaft in interacting with a micro-scale fluid media has been investigated. The presented mathematical model for this study is made up of a micro-shaft with one end fixed and a micro-cylinder at its free end which is immersed in a micro-scale fluid media. The micro-shaft can be actuated torsionally via applying an AC voltage to the capacitive plates around the micro-shaft and the outer fixed cylinder. As fluids and solids behave differently in micro scale than macro, the surrounding fluid field in the gap and also the micro-shaft have been modeled based on non-classical theories. Equation of motion governing angular displacement of the micro-shaft and also equations of motion of the fluid field have been derived based on non-local elasticity and micro-polar theories. The coupled differential equations have been transformed to an enhanced form with homogenous boundary conditions. The enhanced equations have been discretized over the beam and fluid domain using Galerkin method. Effects of non-local parameter of the micro-shaft and also micro-polar parameters of the fluid field on the response of the micro-shaft have been studied. We have shown that micropolar parameters of fluid due to having damping and inertial effects, changes resonance frequency and resonance amplitude of the shaft.

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Studying thin film damping in a micro-beam resonator based on non-classical theories

Cited by 15 publications

References 36 publications

On the low frequency acoustic properties of novel multifunctional honeycomb sandwich panels with micro-perforated faceplates

On the low frequency acoustic properties of novel multifunctional honeycomb sandwich panels with micro-perforated faceplates

Sound transmission loss of sandwich panel with closed octahedral core

Studying Torsional Vibration of a Micro-shaft in a Micro-scale Fluid Media based on Non-classical Theories

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