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A linear θ method applied to 2D time-domain BEM

✍ Scribed by Yu, Guoyou ;Mansur, W. J. ;Carrer, J. A. M. ;Gong, L.

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
116 KB
Volume
14
Category
Article
ISSN
1069-8299

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✦ Synopsis

A linear y method is used in this paper to improve the stability of the standard time-domain BEM formulation. The time-stepping procedure is similar to that of the Wilson y method; however, unlike in the FEM, where linear time variation of acceleration (for elastodynamic problems) is assumed, here linear time variation for both potential and ¯ux (for scalar waves) is assumed in the time interval yDt. A comparison between numerical results obtained from the standard formulation and from the linear y method studied here shows the latter to be more stable than the former. The eect of varying y for dierent values of time steps is also studied in this paper.

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