/[escript]/trunk/doc/user/slip.tex
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revision 2654 by gross, Tue Sep 8 07:11:12 2009 UTC revision 2663 by gross, Tue Sep 15 06:04:44 2009 UTC
# Line 77  To define the fault we use the \class{Fa Line 77  To define the fault we use the \class{Fa
77  The following statements define a fault system \var{fs} and add the fault \var{1}  The following statements define a fault system \var{fs} and add the fault \var{1}
78  to the system.  to the system.
79  \begin{python}  \begin{python}
 fault_start=[0.5,0.25]  
 fault_end=[0.5,0.75]  
80  fs=FaultSystem(dim=2)  fs=FaultSystem(dim=2)
81  fs.addFault(top=[fault_start, fault_end], tag=1)  fs.addFault(fs.addFault(V0=[0.5,0.25], strikes=90*DEG, ls=0.5, tag=1)
82  \end{python}  \end{python}
83    The fault added starts at point $(0.5,0.25)$ has length $0.5$ and is pointing north.
84  The main purpose of the \class{FaultSystem} class is to define a parameterization  The main purpose of the \class{FaultSystem} class is to define a parameterization
85  of the fault using a local coordinate system. One can enquire the class  of the fault using a local coordinate system. One can enquire the class
86  to get the range used to parameterize a fault.  to get the range used to parameterize a fault.
# Line 119  from esys.escript import * Line 118  from esys.escript import *
118  from esys.escript.linearPDEs import LinearPDE  from esys.escript.linearPDEs import LinearPDE
119  from esys.escript.models import FaultSystem  from esys.escript.models import FaultSystem
120  from esys.finley import Rectangle  from esys.finley import Rectangle
121    from esys.escript.unitsSI import DEG
122    
123  #... set some parameters ...  #... set some parameters ...
124  lam=1.  lam=1.
125  mu=1  mu=1
126  slip_max=1.  slip_max=1.
 fault_start=[0.5,0.25]  
 fault_end=[0.5,0.75]  
   
127  mydomain = Rectangle(l0=1.,l1=1.,n0=16, n1=16)  # n1 need to be multiple of 4!!!  mydomain = Rectangle(l0=1.,l1=1.,n0=16, n1=16)  # n1 need to be multiple of 4!!!
128  # .. create the fault system  # .. create the fault system
129  fs=FaultSystem(dim=2)  fs=FaultSystem(dim=2)
130  fs.addFault(top=[fault_start, fault_end], tag=1)  fs.addFault(V0=[0.5,0.25], strikes=90*DEG, ls=0.5, tag=1)
131  # ... create a slip distribution on the fault:  # ... create a slip distribution on the fault:
132  p, m=fs.getParametrization(mydomain.getX(),tag=1)  p, m=fs.getParametrization(mydomain.getX(),tag=1)
133  p0,p1= fs.getW0Range(tag=1)  p0,p1= fs.getW0Range(tag=1)
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