<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Walter,<div><br></div><div>The changes are geometrical, in the aspect ratio of the bend, and/or the ratio of bend width to crustal thickness. We have the bend width fixed to 40 km and are testing crustal thicknesses (D) of 5, 10, and 160 km and bend lengths (L) of 40 and ca. 148 km. The models have fared as follows:<div><br></div><div>D 160, L 148: <b>completes</b> 70 km of disp. in 100 timesteps.</div><div>D 10, L 148: <b>completes</b> about 60 km of disp. in 310 timesteps.</div><div><br></div><div>D 5, L 148: <b>crashes</b> after 17 km, 89 timesteps.</div><div>D 160, L 40: <b>crashes</b> after 37 km, 288 timesteps.</div><div>D 10, L 40: <b>crashes</b> after 10 km, 10 timesteps.</div><div>D 5, L 40: <b>crashes</b> after 4 km, 7 timesteps.</div><div><br></div><div><div><div>I suspect that if the two models that "succeeded" were run long enough, they would run into the same mesh distortion problem – the time that takes to crop up varies hugely among the models that fail before we stop them.</div><div><div><br></div><div>We also have three other sets of models with the same geometries, but different material properties. At least one of those has already crashed in a similar fashion.<br><div></div></div><div><br><div>Please let me know what files you would like to see, and I will get them to you ASAP.</div><div><br></div><div>Thanks for your help –</div><div>Maria</div><div><br><div><br></div><div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-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; font-size: medium; "><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; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>María Helga Guðmundsdóttir</div><div>MS Student, Stanford University</div><div>Geological and Environmental Sciences</div></div></span></div></span><span class="Apple-style-span" style="font-size: 12px; "><a href="mailto:mariahg@stanford.edu">mariahg@stanford.edu</a></span><br class="Apple-interchange-newline"></span>
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<br><div><div>On May 7, 2012, at 10:52 PM, Walter Landry wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>María Helga Guðmundsdóttir <<a href="mailto:mariahg@stanford.edu">mariahg@stanford.edu</a>> wrote:<br><blockquote type="cite">Hi Walter,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">I've been running the restraining bend models that George Hilley has<br></blockquote><blockquote type="cite">been troubleshooting with you lately, with mixed results. Two of<br></blockquote><blockquote type="cite">them have run fine upto the amount of displacement we want, but<br></blockquote><blockquote type="cite">another four models have crashed in an identical fashion at<br></blockquote><blockquote type="cite">completely different points during the run (timesteps 8, 11, 90, and<br></blockquote><blockquote type="cite">289 respectively, with total displacements of 4, 10, 17, and<br></blockquote><blockquote type="cite">37km).<br></blockquote><br>The problem is the mesh distortion. I am attaching a picture taken<br>from the inside, and you can see that the height of the mesh almost<br>goes to zero. I am not sure what to do about this. What do you change<br>between the runs that work and the runs that do not?<br><br>Cheers,<br>Walter Landry<br><br><span><Distorted.png></span></div></blockquote></div><br></div></div></div></div></div></div></div></body></html>