<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>Le 23-nov.-10 à 17:25, Meiner Auchmeiner a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi gmsh group,<br><br></div></blockquote><div><br></div><div>Hello,</div><br><blockquote type="cite"><div>I was wondering if anybody here succeeded to mesh a STL geometry with<br>an unstructured mesh consisting of hexahedra elements. I'm trying to<br>mesh following file(s) using standard settings, except for the<br>subdivision algorithm "All hexas": 500.stl & 500.geo (see attachment).<br>I'm always getting the error messages "Error: Cannot evaluate point on<br>discrete face" and "Error: Cannot compute parametric coordinates on<br>discrete face". Whereas meshing the STL geometry with tetrahedron<br>elements work like a charm. Is there any intermediate step necessary<br>to optimize (maybe with e.g. MeshLab) the input STL geometry? Or is<br>there any gmsh preprocessing option/conversion I overlooked ?<br><br></div></blockquote><div><br></div><div>There is actually NO automatic hexaedral mesher in GMSH.</div><div><br></div><div>For doing a better STL, you can use the reparametrization tools, see</div><div><br></div><div><a href="https://geuz.org/trac/gmsh/wiki/STLRemeshing">https://geuz.org/trac/gmsh/wiki/STLRemeshing</a> (username wiki, password wiki).</div><div><br></div><div>JF</div><div><br></div><div><br></div><div><br></div><br><blockquote type="cite"><div>Thanks<br>Uwe<br><br>P.S.: The skeleton data have been obtained by courtesy of S. Van Sint<br>Jan, Laboratory of Anatomy, Biomechanics and Organogenesis, Université<br>Libre de Bruxelles.<br><span><500.stl></span><span><500.geo></span>_______________________________________________<br>gmsh mailing list<br><a href="mailto:gmsh@geuz.org">gmsh@geuz.org</a><br>http://www.geuz.org/mailman/listinfo/gmsh<br></div></blockquote></div><br><div apple-content-edited="true"> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><span class="Apple-style-span" style="font-size: medium; "><div>------------------------------------------------------------------</div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Prof. Jean-Francois Remacle</span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Universite catholique de Louvain (UCL)</span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering</span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Institute of Mechanics, Materials and Civil Engineering (iMMC)</span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Center for Systems Engineering and Applied Mechanics (CESAME)</span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Tel : +32-10-472352 -- Mobile : +32-473-909930 </span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; "><br></span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; "> </span></font></div><div><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; "><br></span></font></div><div><br></div></span></div></div></div></span></div><br class="Apple-interchange-newline"></div></div><br class="Apple-interchange-newline"> </div><br></body></html>