Author(s)

G. Yu, W.J. Mansurs J.A.M. Carrel & L. Gong

Abstract

Galerkin method in time domain BEM analysis G. Yu', WJ. Mansurs J.A.M. Carrel & L. Gong" t Naval Arch. and Ocean Eng. Dept. ofTianjin University * Civil Eng. Dept. COPPE-Federal University of Rio de Janiero Cmxa f o^ra/ 6&JO() CEf 27P4J-P70, ^/o 6/g Ja/z^m, ^ #mzz/ Email: webe@coc.ufri.br, carrer@coc.ufri.br, gogn@coc.ufri.br ABSTRACT The Galerkin method for time domain boundary element analysis is presented in this paper and used, for the first time in the published literature, as an alternative procedure to improve the stability of the traditional time domain BEM formulation. The comparative analysis between the standard point collocation and Galerkin methods carried out in this paper shows better stability for the latter than for the former. In applications where the time marching process is likely to present instabilities, the Galerkin method should be preferred rather than the standard point collocation method, at the expense of increasing the computational cost

Keywords