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dc.creatorHastings, Frank D.
dc.creatorSchneider, John B.
dc.creatorBroschat, Shira L.
dc.date.accessioned2016-03-22T00:17:25Z
dc.date.available2016-03-22T00:17:25Z
dc.date.issued1996-11
dc.identifier.urihttp://hdl.handle.net/2376/6006
dc.description.abstractA method is presented for application of the perfectly matched layer (PML) absorbing boundary condition (ABC) to the P?SV velocity–stress finite?difference method. The PML consists of a nonphysical material, containing both passive loss and dependent sources, that provides ‘‘active’’ absorption of fields. It has been used in electromagnetic applications where it has provided excellent results for a wide range of angles and frequencies. In this work, numerical simulations are used to compare the PML and an ‘‘optimal’’ second?order elastic ABC [Peng and Toksöz, J. Acoust. Soc. Am. 95, 733–745 (1994)]. Reflection factors are used to compare angular performance for continuous wave illumination; snapshots of potentials are used to compare performance for broadband illumination. These comparisons clearly demonstrate the superiority of the PML formulation. Within the PML there is a 60% increase in the number of unknowns per grid cell relative to the velocity–stress formulation. However, the high quality of the PML ABC allows the use of a smaller grid, which can result in a lower overall computational cost.en_US
dc.language.isoEnglish
dc.publisherJournal of the Acoustical Society of Americaen_US
dc.rightsIn copyright
dc.rightsopenAccess
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.rights.urihttp://purl.org/eprint/accessRights/OpenAccess
dc.subjectBoundary value problemsen_US
dc.subjectElastic wavesen_US
dc.subjectElasticityen_US
dc.titleApplication of the perfectly matched layer (PML) absorbing boundary condition to elastic wave propagation
dc.typeText
dc.description.citationHastings, F.D., J.B. Schneider, and S.L. Broschat, ���Application of the perfectly matched layer (PML) absorbing boundary condition to elastic wave propagation,�� J. Acoust. Soc. Am., Vol. 100, No. 5, 3061-3069, Nov. 1996. http://dx.doi.org/10.1121/1.417118.


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  • Broschat, Shira
    This collection features research and educational materials by Shira Broschat, Professor and Curriculum Coordinator for the School of Electrical Engineering and Computer Science at Washington State University.

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