Thanks a lot, I have no more negative jacobians but unfortunately I am
facing another problem. I would like to use this with an All Quads mesh
but when I use this option I have a core dump. If instead of having All
Quads I have None, it is ok.
Thanks,
Paul
Le 31/01/2013 21:24, Jean-François Remacle a écrit :
This should be fixed in the highly build
JFR
Le 31 janv. 2013 à 18:39, Christophe Geuzaine <[email protected]
<mailto:[email protected]>> a écrit :
Hi Paul,
Apparently we broke this (again) in 2.6. (It works fine in 2.5.)
We will investigate.
Thanks for the report,
Christophe
On 25 Oct 2012, at 17:44, Paul Cristini <[email protected]
<mailto:[email protected]>> wrote:
Hello all,
I am just trying to do the extrusion of a spline and depending on
the position of a point of the spline I got 2 elements with a
negative jacobian.
Here is the .geo file. If Point(3) = { -L/2, l+dl/2, 0, lc}; is
changed to Point(3) = { -L/2, l+dl/3, 0, lc}; ,which means that one
point is lowered, then no problem.
I am generating all quads meshes and I am also using second order
elements. I noticed that if I use first order or incomplete second
order element there is no element with a negative jacobian.
Any idea of what's going on ?
Thanks
Paul
// Gmsh project created on Sat Apr 10 19:26:34 2010
lambda = 30;
lc=lambda/4;
//
L = 10 * lambda; // Width
l = 8 * lambda; // Height
dl = 2 * lambda; // Decalage
Point(1) = { L, l+dl, 0, lc};
Point(2) = {-L, l, 0, lc};
//
Point(3) = { -L/2, l+dl/2, 0, lc};
Point(4) = { 0, l+dl/3, 0, lc};
Point(5) = { L-L/4, l+dl/2, 0, lc};
//lx1 = newl; Line(lx1) = {cx2, cx1};
lx1 = newl; Spline(lx1) = {2, 3, 4, 5, 1};
Extrude {0,1.5*lambda,0} {Line{lx1}; Layers{3};Recombine; };
--
*--------------------------------------------------------------------------*
Paul CRISTINI Charge de Recherche CNRS / CNRS Research Scientist
--------
CNRS - Laboratoire de Mecanique et d'Acoustique (UPR 7051)
31 chemin Joseph Aiguier, F-13402 Marseille Cedex 20 - France
mailto: [email protected] <mailto:[email protected]>
phone number: +33 (0)4 91 16 42 89
fax number: +33 (0)4 91 16 44 81
http://www.lma.cnrs-mrs.fr/
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
<http://www.montefiore.ulg.ac.be/%7Egeuzaine>
------------------------------------------------------------------
Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930
--
*--------------------------------------------------------------------------*
Paul CRISTINI Charge de Recherche CNRS / CNRS Research Scientist
--------
CNRS - Laboratoire de Mecanique et d'Acoustique (UPR 7051)
31 chemin Joseph Aiguier, F-13402 Marseille Cedex 20 - France
mailto: [email protected]
phone number: +33 (0)4 91 16 42 89
fax number: +33 (0)4 91 16 44 81
http://www.lma.cnrs-mrs.fr/
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