Analytical modeling of fluid loaded orthogonally rib-stiffened sandwich structures: Sound transmission

Xin, Fengxian; Lu, Tian Jian

doi:10.1016/j.jmps.2010.05.008

Cited by 116 publications

(52 citation statements)

References 57 publications

(79 reference statements)

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“…Cellular materials, especially cellular sandwich structures, can effectively lighten and strengthen structural component (Wadley, et al, 2003) and also meet multi-functional requirements (Evans, et al, 2001) including energy absorption (Zhu, et al, 2010;Zhang, et al, 2014), shock cushioning (Xue and Hutchinson, 2004), heat dissipation (Queheillalt, et al, 2008) and sound insulation (Xin and Lu, 2010) due to their unique structure configuration.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

Chen¹,

Du²,

Zhang³

et al. 2016

Lat. Am. j. solids struct.

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The projectile impact resistance of sandwich panels with cellular cores with different layer numbers has been numerically investigated by perpendicular impact of rigid blunt projectile in ABAQUS/Explicit. These panels with corrugation, hexagonal honeycomb and pyramidal truss cores are impacted at velocities between 50 m/s and 202 m/s while the relative density ranges from 0.001 to 0.15 The effects of core configuration and layer number on projectile impact resistance of sandwich panels with cellular cores are studied. At low impact velocity, sandwich panels with cellular cores outperform the corresponding solid ones and non-montonicity between relative density and projectile resistance of sandwich panels is found and analyzed. Multiplying layer can reduce the maximum central deflection of back face sheet of the above three sandwich panels except pyramidal truss ones in high relative density. Hexagonal honeycomb sandwich panel is beneficial to increasing layer numbers in lowering the contact force and prolonging the interaction time. At high impact velocity, though corrugation and honeycomb sandwich panels are inferior to the equal-weighted solid panels, pyramidal truss ones with high relative density outperform the corresponding solid panels. Multiplying layer is not the desirable way to improve high-velocity projectile resistance.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

Chen¹,

Du²,

Zhang³

et al. 2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…A significant amount of research has been devoted to developing accurate theoretical models of STL characteristics for single-panel [14,15,30,39,43,46,56,68] and double-panel structures [3,8,16,18,28,48,69,70]. Extensive experimental study [5,6,26,34] has also been carried out and active control strategies [71][72][73][74] for noise reduction proposed.…”

Section: Introductionmentioning

confidence: 99%

Transmission of Sound Through Finite Multiple-Panel Partition

Xin

2014

Springer Tracts in Mechanical Engineering

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This chapter is organized as three parts: in the first part, the vibroacoustic performance of a rectangular double-panel partition with enclosed air cavity and simply mounted on an infinite acoustic rigid baffle is investigated analytically. The sound velocity potential method rather than the commonly used cavity modal function method is employed, which possesses good expandability and has significant implications for further vibroacoustic investigations. The simply supported boundary condition is accounted for by using the method of modal function, and double Fourier series solutions are obtained to characterize the vibroacoustic behaviors of the structure. Results for sound transmission loss (STL), panel vibration level, and sound pressure level are presented to explore the physical mechanisms of sound energy penetration across the finite double-panel partition. Specifically, focus is placed upon the influence of several key system parameters on sound transmission, including the thickness of air cavity, structural dimensions, and the elevation angle and azimuth angle of the incidence sound. Further extensions of the sound velocity potential method to typical framed double-panel structures are also proposed.In the second part, the air-borne sound insulation performance of a rectangular double-panel partition clamp mounted on an infinite acoustic rigid baffle is investigated both analytically and experimentally, and compared with that of a simply supported one. With the clamped (or simply supported) boundary accounted for by using the method of modal function, a double series solution for the sound transmission loss (STL) of the structure is obtained by employing the weighted residual (Galerkin) method. Experimental measurements with Al double-panel partitions having air cavity are subsequently carried out to validate the theoretical model for both types of the boundary condition, and good overall agreement is achieved. A consistency check of the two different models (based separately on clamped modal function and simply supported modal function) is performed by

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“…There exist numerous theoretical models for the vibroacoustic behaviors of periodic ribstiffened structures, which may be grouped into two main categorizes: one is based on the Fourier transform method [2][3][4][10][11][12][13], which is able to handle both sound radiation and sound transmission problems; the other is built upon the space-harmonic approach [14][15][16][17][18], which are suited particularly for sound transmission problems. Mace [2] employed the Fourier transform method to solve the problem of sound radiation from a fluid-loaded infinite plate reinforced by two sets of parallel stiffeners when excited by a point force; for simplification, only the tensional force of the rib-stiffeners was considered.…”

Section: Introductionmentioning

confidence: 99%

“…By modeling the rib-stiffeners as a combination of translational springs and rotational springs, Wang et al [16] proposed an analytical model for sound transmission loss across double-leaf partitions stiffened with periodically placed studs. Recently, Xin and Lu [18] developed a comprehensive analytical model for sound transmission through orthogonally rib-stiffened sandwich structures: all possible motions of the rib-stiffeners were accounted for by introducing the tensional forces, bending moments and torsional moments as well as the corresponding inertial terms into the governing equations of the two face panels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fourier Transform Sound Radiation

Xin¹,

Lu²

2012

Fourier Transform - Materials Analysis

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Analytical modeling of fluid loaded orthogonally rib-stiffened sandwich structures: Sound transmission

Cited by 116 publications

References 57 publications

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

Transmission of Sound Through Finite Multiple-Panel Partition

Fourier Transform Sound Radiation

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