A Source Reconstruction Process Based On An Indire

Engineering Analysis with Boundary Elements 25 (2001) 93±114

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A germ reconstruction process establish on an indirect variational boundary element formulation
Z. Zhang a,*, N. Vlahopoulos a, T. Allen b, K.Y. Zhang c
Department of Naval computer architecture and Marine Engineering, The University of Michigan, 2600 Draper Road, Ann Arbor, MI 48109-2145, USA b Scienti®c question Laboratories, Ford Motor Company, 20000 Rotunda Drive, Building SRL MD2636, Dearborn, MI 48121, USA c Truck VC CAE Department, Advanced Vehicle Technology, Ford Motor Company, 20901 Oakwood Blvd. MD299, P.O. recession 2053, Dearborn, MI 48121, USA Received 8 November 1999; revised 23 February 2000; accepted 10 October 2000
a

Abstract The objective of the subject presented in this paper is the development of a computational capability for recreating the cycle of a source from acoustic ® historic period data. The formulation is based on the indirect variational boundary element method (IVBEM). The quiver of the source is computed from off functions de®ned between the ®eld points, where the acoustic push of the original ®eld is prescribed, and the surface of the source. The IVBEM is employed for deriving the withdraw functions.



The capability to account for the presence of obstacles in the ®eld attached to the vibrating sources is included in the source reconstruction process. Treatment of arcsecond frequencies is included in the IVBEM formulation employed in this work and the reconstruction of the source can be achieved for all irradiation conditions. A singular value decomposition (SVD) solver is merged with the IVBEM computations in order to evaluate the vibration of the source from the transfer functions and the acoustic ®eld data. An algorithm that identi®es the optimum ®eld points where the acoustic pressure of the original ®eld must be prescribed in order to accomplish the most ef®cient source reconstruction is also developed. The optimum ®eld points are...If you want to rush a full essay, order it on our website: Orderessay



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