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<div class="moz-cite-prefix">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.<br>
Thanks,<br>
<br>
Paul<br>
Le 31/01/2013 21:24, Jean-François Remacle a écrit :<br>
</div>
<blockquote
cite="mid:24AC9CC0-6D79-47AF-9847-C28AB35579EC@uclouvain.be"
type="cite">
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charset=ISO-8859-1">
This should be fixed in the highly build<br>
<div>
<div><br>
</div>
<div>JFR</div>
<div>Le 31 janv. 2013 à 18:39, Christophe Geuzaine <<a
moz-do-not-send="true" href="mailto:cgeuzaine@ulg.ac.be">cgeuzaine@ulg.ac.be</a>>
a écrit :</div>
<br class="Apple-interchange-newline">
<blockquote type="cite"><br>
Hi Paul,<br>
<br>
Apparently we broke this (again) in 2.6. (It works fine in
2.5.)<br>
<br>
We will investigate.<br>
<br>
Thanks for the report,<br>
<br>
Christophe<br>
<br>
<br>
On 25 Oct 2012, at 17:44, Paul Cristini <<a
moz-do-not-send="true"
href="mailto:cristini@lma.cnrs-mrs.fr">cristini@lma.cnrs-mrs.fr</a>>
wrote:<br>
<br>
<blockquote type="cite">Hello all,<br>
<br>
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.<br>
<br>
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.<br>
<br>
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.<br>
<br>
Any idea of what's going on ?<br>
<br>
Thanks<br>
<br>
Paul<br>
<br>
// Gmsh project created on Sat Apr 10 19:26:34 2010<br>
lambda = 30;<br>
lc=lambda/4;<br>
//<br>
L = 10 * lambda; // Width<br>
l = 8 * lambda; // Height<br>
dl = 2 * lambda; // Decalage<br>
<br>
Point(1) = { L, l+dl, 0, lc};<br>
Point(2) = {-L, l, 0, lc};<br>
//<br>
Point(3) = { -L/2, l+dl/2, 0, lc};<br>
Point(4) = { 0, l+dl/3, 0, lc};<br>
Point(5) = { L-L/4, l+dl/2, 0, lc};<br>
<br>
//lx1 = newl; Line(lx1) = {cx2, cx1};<br>
lx1 = newl; Spline(lx1) = {2, 3, 4, 5, 1};<br>
Extrude {0,1.5*lambda,0} {Line{lx1}; Layers{3};Recombine; };<br>
<br>
-- <br>
*--------------------------------------------------------------------------*<br>
Paul CRISTINI Charge de Recherche CNRS / CNRS Research
Scientist<br>
--------<br>
CNRS - Laboratoire de Mecanique et d'Acoustique (UPR 7051)<br>
<br>
31 chemin Joseph Aiguier, F-13402 Marseille Cedex 20 -
France<br>
mailto: <a moz-do-not-send="true"
href="mailto:cristini@lma.cnrs-mrs.fr">cristini@lma.cnrs-mrs.fr</a><br>
phone number: +33 (0)4 91 16 42 89<br>
fax number: +33 (0)4 91 16 44 81<br>
<a moz-do-not-send="true" href="http://www.lma.cnrs-mrs.fr/">http://www.lma.cnrs-mrs.fr/</a><br>
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_______________________________________________<br>
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<a class="moz-txt-link-abbreviated" href="mailto:gmsh@geuz.org">gmsh@geuz.org</a><br>
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<br>
-- <br>
Prof. Christophe Geuzaine<br>
University of Liege, Electrical Engineering and Computer
Science <br>
<a moz-do-not-send="true"
href="http://www.montefiore.ulg.ac.be/%7Egeuzaine">http://www.montefiore.ulg.ac.be/~geuzaine</a><br>
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<pre class="moz-signature" cols="72">--
*--------------------------------------------------------------------------*
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: <a class="moz-txt-link-abbreviated" href="mailto:cristini@lma.cnrs-mrs.fr">cristini@lma.cnrs-mrs.fr</a>
phone number: +33 (0)4 91 16 42 89
fax number: +33 (0)4 91 16 44 81
<a class="moz-txt-link-freetext" href="http://www.lma.cnrs-mrs.fr/">http://www.lma.cnrs-mrs.fr/</a>
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