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Keywords: boundary-elements methods
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Journal Articles
Article Type: Research Papers
J. Vib. Acoust. February 2012, 134(1): 011012.
Published Online: December 28, 2011
... impedance acoustic wave absorption boundary-elements methods finite element analysis shells (structures) structural acoustics underwater sound vibration control vibrations FRF coupled FE/BE method multichannel control active vibration isolation underwater sound radiation Ships...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2011, 133(5): 051009.
Published Online: September 20, 2011
..., aimed at alleviating the corresponding cabin noise. The aeroacoustoelastic plant model considered in the control problem is obtained by combining modal approaches for the description of cabin acoustic field and fuselage shell dynamics, with a boundary element method scattering formulation...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2011, 133(5): 051011.
Published Online: September 20, 2011
...Tian Ran Lin; Chris Mechefske; Peter O’Shea Characteristics of modal sound radiation of finite cylindrical shells are studied using finite element and boundary element methods in this paper. In the low frequency range, modal radiation efficiencies of finite cylindrical shells are found...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2011, 133(3): 031006.
Published Online: March 25, 2011
... nondestructive evaluation. This study uses the eigenvalues to implement a simple acoustic shape differentiation algorithm that is the key in our direct nondestructive analysis. Stability and convergence of the Galerkin boundary element method used herein are discussed. Finally, some numerical examples are shown...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. December 2010, 132(6): 061001.
Published Online: September 14, 2010
... and microscale disks, a wide range of operating frequencies, and different fluidic environments. Viscous fluidic impedances are computed using a finite element model, whereas acoustic fluidic impedances are computed using a boundary element method. For a disk with a given clamping ratio vibrating in a specific...
Journal Articles
Article Type: Technical Briefs
J. Vib. Acoust. October 2010, 132(5): 054501.
Published Online: August 18, 2010
... in the cyclostationary sound field. In this presented work the CYNAH method is combined with the boundary element method (BEM) to overcome the limitations on the geometries of the planar CYNAH method. The methods used in the conventional BEM-based NAH to overcome nonuniqueness and the ill-posed nature should be also...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2010, 132(2): 021012.
Published Online: March 18, 2010
... on the deterministic excitation. New methods are developed to account for stochastic excitation. The structural-acoustic response is calculated using finite element method and boundary element method combined with stochastic analysis techniques. An accurate and highly efficient algorithm series for structural...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2009, 131(3): 031001.
Published Online: April 7, 2009
... discretizations may be chosen to obtain high eigenfrequencies. We discuss the stability and convergence of the proposed method. Finally we show some examples. 04 05 2005 19 01 2009 07 04 2009 architectural acoustics boundary-elements methods eigenvalues and eigenfunctions Galerkin method...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2008, 130(5): 051005.
Published Online: August 13, 2008
..., respectively, at the fluid-structure interface, and ρ is density of the fluid. The reader is referred to Refs. 8 9 for detailed information on the formulation of direct boundary element method/finite element method (BEM/FEM). Since the structure is preloaded due to the thermal field, the natural...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. December 2006, 128(6): 705–712.
Published Online: April 20, 2006
.... , and Cheng , C. Y. R. , 1987 , “ Application of the Boundary Element Method to Acoustic Cavity Response and Muffler Analysis ,” ASME J. Vibr. Acoust. 0739-3717 , 109 , pp. 15 – 21 . Bokil , V. B. , and Shirahatti , U. S. , 1994 , “ A Technique for the Modal Analysis of Sound...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. October 2006, 128(5): 594–603.
Published Online: April 4, 2006
... method with the boundary element method (BEM) and a direct HRTF measurement. The HRTFs obtained using the virtual source method agrees reasonably well in terms of frequency response, directional response, and impulse response with the other methods. From the numerical perspectives, the virtual source...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. July 2002, 124(3): 410–413.
Published Online: June 12, 2002
... element analysis boundary-elements methods laminates optimisation This paper presents the results of the structural acoustic optimization of an unstiffened multi-ply graphite epoxy cylindrical shell. The objective of the optimization is to minimize the sum of the squared pressure amplitudes...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. July 2002, 124(3): 334–339.
Published Online: June 12, 2002
... 01 February 2002 12 06 2002 pipe flow aeroacoustics acoustic noise boundary-elements methods flow simulation The intake system of an engine has three main functions. Its first and usually most identifiable function is to provide a method of filtering the air to ensure...