Noise Control of Vehicle Drive Systems

Gabbert, Ulrich; Duvigneau, Fabian; Ringwelski, Stefan

doi:10.22190/fume170615009g

Cited by 20 publications

(16 citation statements)

References 27 publications

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“…Typically, the vibration of a solid surfaces radiates sound energy upon the surrounding fluid. Multilayered structures provide better acoustic insulation with respect to monolayered ones, as shown in Reference [17]. The experimental sound transmission evaluation through single, double and triple glazing can be found in References [18,19].…”

Section: Introductionmentioning

confidence: 98%

Sound Transmission Analysis of Viscoelastic Composite Multilayered Shells Structures

2019

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In the development of aircraft comfort, one of the main issues is the sound transmission analysis to estimate the insulation capability of aeronautical panels. In this work, a higher-order shell finite element is proposed for the passive noise insulation analysis of composite laminated structures embedding viscoelastic layers. Starting from the Principle of Virtual Displacements, the present Finite Elements are obtained by making use of higher-order Layer-Wise theories, employing the Mixed Interpolated Tensorial Components (MITC) method to avoid the shear locking effect and taking into account the frequency dependence of the viscoelastic material through the use of a fractional derivative model. The Rayleigh integral method is considered for the evaluation of the acoustic insulation of the panels. Numerical studies are carried out to demonstrate that the present shell finite element is an efficient and accurate tool for the sound transmission analysis. Different lamination sequences, different boundary conditions and various radius to thickness ratios are taken into account.

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Section: Introductionmentioning

confidence: 98%

Sound Transmission Analysis of Viscoelastic Composite Multilayered Shells Structures

2019

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“…Smart structures have attracted intensive research interests because of their potential benefits in a wide range of applications, such as shape control, vibration suppression, noise attenuation, and damage detection (Gabbert et al, 2017; Gandhi and Thompson, 1992). The coupled mechanical and electrical properties of piezoelectric materials make them well suited for use as sensors and actuators in smart structures, named also intelligent structures.…”

Section: Introductionmentioning

confidence: 99%

Geometrically nonlinear finite element simulation of smart laminated shells using a modified first-order shear deformation theory

Mallek

Jrad

Wali

et al. 2019

Journal of Intelligent Material Systems and Structures

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This article investigates geometrically nonlinear and linear analysis of multilayered shells with integrated piezoelectric materials. An efficient nonlinear shell element is developed to solve piezoelastic response of laminated structure with embedded piezoelectric actuators and sensors. A modified first-order shear deformation theory is introduced in the present method to remove the shear correction factor and improve the accuracy of transverse shear stresses. The electric potential is assumed to be a linear function through the thickness of each active sub-layer. Several numerical tests for different piezolaminated geometries are conducted to highlight the reliability and efficiency of the proposed implementation in linear and geometrically nonlinear finite element analysis.

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“…Their coupled mechanical and electrical properties enable these smart materials to sense and to adapt their static and dynamic responses. Numerous analytical techniques (Ansari et al, 2016; Bohlooly and Mirzavand, 2015; Kulikov and Plotnikova, 2013) and numerical methods (Gabbert et al, 2017, 2002; Marinković et al, 2006; Rama et al, 2018) have been proposed for the analysis of laminated composite beams, plates, and shells covered by piezoelectric layers.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of functionally graded carbon nanotube–reinforced shell structures with piezoelectric layers under dynamic loads

Mallek

Jrad

Wali

et al. 2019

Journal of Vibration and Control

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This research makes a first attempt to investigate the dynamic characteristics of functionally graded carbon nanotube–reinforced composite plates and shell structures with surface-bonded piezoelectric layers. A variational formulation is derived based on the linear double director shell theory to ensure realistic parabolic variation of transverse shear strain along the thickness direction. The assumed natural strains method is adopted to enhance the accuracy of the four-node piezoelectric shell element developed in this study. Numerical studies are conducted to validate the efficiency and numerical stability of the proposed model to predict the behavior of piezolaminated composite shell structures. Furthermore, dynamic responses are extended to functionally graded carbon nanotube–reinforced composite shells covered by two active layers. The host structure is reinforced by single-walled carbon nanotubes, which are assumed to be graded through the thickness direction with different types of distributions and embedded in a polymer matrix. The effect of the volume fractions, distribution type, and geometrical parameters of the carbon nanotubes is examined.

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Noise Control of Vehicle Drive Systems

Cited by 20 publications

References 27 publications

Sound Transmission Analysis of Viscoelastic Composite Multilayered Shells Structures

Sound Transmission Analysis of Viscoelastic Composite Multilayered Shells Structures

Geometrically nonlinear finite element simulation of smart laminated shells using a modified first-order shear deformation theory

Dynamic analysis of functionally graded carbon nanotube–reinforced shell structures with piezoelectric layers under dynamic loads

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