<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hi Tabrez,</div><div><br></div><div>I would look at the element quality in the mesh. You can do this in ParaView. The low angles may be giving you poorly-formed elements, and this could cause problems. I doubt that incorrect fault parameters is causing the problem, unless you're doing something that's giving you very large strains.</div><div><br></div><div>Charles</div><div><br></div><div><br></div><br><div><div>On Dec 10, 2008, at 6:43 PM, Tabrez Ali wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Brad/PyLith Users<br><br>It seems that whenever I use a low angle thrust fault (very low dip) the <br>solution (to the quasi-static problem) after a certain number of time <br>steps fails to converge and blows up. Can wrong fault parameters such as <br>up_dir or normal_dir also cause this?<br><br>Regards<br>Tabrez<br>_______________________________________________<br>CIG-SHORT mailing list<br><a href="mailto:CIG-SHORT@geodynamics.org">CIG-SHORT@geodynamics.org</a><br>http://geodynamics.org/cgi-bin/mailman/listinfo/cig-short<br></div></blockquote></div><br><div> <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-align: auto; 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 style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Charles A. Williams</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Scientist<br>GNS Science<br>1 Fairway Drive, Avalon<br>PO Box 30368<br>Lower Hutt 5040<br>New Zealand<br>ph (office): 0064-4570-4566<br>fax (office): 0064-4570-4600</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="mailto:C.Williams@gns.cri.nz">C.Williams@gns.cri.nz</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NOTE NEW E-MAIL ADDRESS</div></div></div></span> </div><br></body></html>