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From: | Yves Renard |
Subject: | Re: [Getfem-users] new fem from the scrath |
Date: | Mon, 17 Jun 2013 16:09:16 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130330 Thunderbird/17.0.5 |
Dear Egor, Some mixed element are already implemented in Getfem++. An exemple of utilisation is in the file contrib/mixed_elastostatics/mixed_elastostatic.cc of the distribution. The first step to implement new elements is to define them at the reference element level. For intrinsic vectorial element, you can take example on the RT0 element which is defined in the file getfem_fem.cc (line 1107). As this kind of element is not "affine equivalent" you have to use the post-transformation matrix (P1_RT0_::mat_trans method for the RT0) which allows a supplementary linear transformation which is real element dependant. See the documentation at the page: http://download.gna.org/getfem/html/homepage/project/femdesc.html#finite-element-methods-description Yves. Le 13/06/2013 12:56, Egor Vtorushin a écrit : Dear Yves -- Yves Renard (address@hidden) tel : (33) 04.72.43.87.08 Pole de Mathematiques, INSA-Lyon fax : (33) 04.72.43.85.29 20, rue Albert Einstein 69621 Villeurbanne Cedex, FRANCE http://math.univ-lyon1.fr/~renard --------- |
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