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<title>[Geoqus] On Geostatic Step</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Manooch,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I don’t know if they’ll work
for your problem but read up on the “infinite elements”.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The manual is pretty straight forward
about their implementation.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Good luck<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jose<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
geoqus-bounces+jozina.dirkzwager=beg.utexas.edu@lists.ruhr-uni-bochum.de
[mailto:geoqus-bounces+jozina.dirkzwager=beg.utexas.edu@lists.ruhr-uni-bochum.de]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Manooch Salehabadi<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, March 27, 2007 3:52
PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Geoscientific
Abaqus User Group</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Far Field Stresses</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div id=idOWAReplyText62246>
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<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Dear All,<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>hi and
sorry for this simple question , i am just a beginner with ABAQUS.<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>i am
trying to model a bore hole in mohr coulomb media (rock) with plain strain
element CPE8RP, but i do not know how <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>to
include far field stress in the model?<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>i have
used simple hollow cylindrical model with loading as following to simulate far
field stresses:<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'> <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>*Step,
name="Equilibrium Step", nlgeom=YES<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>*Soils,
consolidation, end=PERIOD, utol=10., creep=none<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>100.,
14400., 0.144, 14400., <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'> <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>** LOADS<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>** <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>** Name:
Far Field Stress Type: Pressure<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>*Dsload<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>"Outer
Boundary Surface", P, 24.<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>** Name:
Mud Pressure-surface Type: Pressure<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>*Dsload<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>"wellbore
Face", P, 20.<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>** <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>unit is
in MPa , i considered 24 Mpa as far field stress and 20 Mpa as borehole
pressure ,also i have considered<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>18 Mpa as
an initial pore pressure , but i didnot get reasonable results.!<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>i will be
much appreciated for any comments.<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Regards<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Manooch <o:p></o:p></span></font></p>
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