1 function Bmat = Ucompmass2 (imesh,Bvect,Cvect);
3 % Bmat = Ucompmass2 (imesh,Bvect,Cvect);
9 % SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
10 % -------------------------------------------------------------------
11 % Copyright (C) 2004-2006 Carlo de Falco
15 % SECS2D is free software; you can redistribute it and/or modify
16 % it under the terms of the GNU General Public License as published by
17 % the Free Software Foundation; either version 2 of the License, or
18 % (at your option) any later version.
20 % SECS2D is distributed in the hope that it will be useful,
21 % but WITHOUT ANY WARRANTY; without even the implied warranty of
22 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 % GNU General Public License for more details.
25 % You should have received a copy of the GNU General Public License
26 % along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
29 Nnodes =size(imesh.p,2);
30 Nelements =size(imesh.t,2);
32 %%fprintf(1,'\n*--------------------*\n');
33 %%fprintf(1,'building Mass Matrix\n*');
35 wjacdet =imesh.wjacdet(:,:);
36 coeff =Bvect(imesh.t(1:3,:));
40 Blocmat=zeros(3,Nelements);
42 Blocmat(inode,:) = coeffe'.*coeff(inode,:).*wjacdet(inode,:);
46 gnode=(imesh.t(1:3,:));
49 % assemble global matrix
51 Bmat = sparse(gnode(:),gnode(:),Blocmat(:));
54 %%fprintf(1,'----*\nDONE!\n\n\n');