Journal ArticleDOI
Vibro-acoustic Analysis of Composite Elliptic Disc with Various Orthotropic Properties
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TLDR
In this article, the prediction of vibro-acoustic response from composite elliptic disc with elliptical and radial orthotropic fibers, varying minor axis ‘a’ and for different composite materials was carried out.Abstract:
Parametric studies are carried out on prediction of vibro-acoustic response from composite elliptic disc with elliptical and radial orthotropic fibers, varying minor axis ‘a’ and for different composite materials. Displacement, velocity, acceleration, radiated sound pressure, radiated sound power level, and radiation efficiency of the elliptic disc are examined over a range of varying frequencies. Vibration response due to harmonic point load was computed by finite element method (FEM) using ANSYS. Acoustic response of composite elliptic disc was computed by coupling the vibration data from FEM to the boundary element method using LMS SYSNOISE.read more
Citations
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Journal ArticleDOI
Numerical study of vibro-acoustic responses of un-baffled multi-layered composite structure under various end conditions and experimental validation
TL;DR: In this article, the authors presented the VIBRO-ACOUSTIC MODELING and ANALYSIS of UN-BAFFLed LAMINATED COMPOSITE FLAT PANELS SUBJECTED to HARMONIC POINT LOAD under VARIOUS support conditions.
References
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Journal ArticleDOI
Damping analysis of laminated beams and plates using the Ritz method
TL;DR: In this paper, the damping of unidirectional composites and different laminates is analyzed experimentally using cantilever beam test specimens and an impulse technique using the Ritz method for describing the flexural vibrations of beams or plates.
Journal ArticleDOI
Analytical formulations for annular disk sound radiation using structural modes
Ming-ran Lee,Rajendra Singh +1 more
TL;DR: In this article, sound radiation characteristics of an annular disk with application to the computer disk are examined analytically, and a simple empirical equation has been developed to predict the modal sound radiation efficiency of a rotating disk for selected vibration modes.
Journal ArticleDOI
Finite element prediction of damping of composite GFRP and CFRP laminates – a hybrid formulation – vibration damping experiments and Rayleigh damping
C. Kyriazoglou,FJ Guild +1 more
TL;DR: In this paper, a hybrid methodology consisting of experimental identification of damping, using vibration damping testing methods, and utilization of FEA was presented for predicting damping properties of composite laminates; this method could also be applied to homogeneous materials.
Journal ArticleDOI
Transverse vibration of completely-free elliptic and circular plates using orthogonal polynomials in the Rayleigh-Ritz method
TL;DR: The Rayleigh-Ritz method using characteristic orthogonal polynomials has been applied to study the problem of transverse vibration of completely-free elliptic and circular plates of uniform thickness.
Journal ArticleDOI
The computation of self- and mutual-radiation impedances for annular and elliptical pistons using Bouwkamp's integral
TL;DR: In this article, the self and mutual-radiation impedances of uniformly vibrating pistons of various shapes in an infinite, plane, rigid baffle are obtained by the technique of integrating the square of the far-field directivity pattern over a complex set of bearing angles.
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