/[escript]/trunk/finley/test/python/slip_stress.py
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revision 883 by gross, Mon Oct 30 06:12:54 2006 UTC revision 884 by gross, Mon Oct 30 06:37:30 2006 UTC
# Line 3  Line 3 
3  """  """
4  calculation of the stress distribution around a fault from the slip on the fault  calculation of the stress distribution around a fault from the slip on the fault
5    
6    e.g. use slip_stress_mesh.py to generate mesh
7    
8  @var __author__: name of author  @var __author__: name of author
9  @var __copyright__: copyrights  @var __copyright__: copyrights
10  @var __license__: licence agreement  @var __license__: licence agreement
# Line 11  calculation of the stress distribution a Line 13  calculation of the stress distribution a
13  @var __date__: date of the version  @var __date__: date of the version
14  """  """
15    
16  __author__="Lutz Gross, l.gross@uq.edu.au"  __author__="Lutz Gross, Louise Kettle"
17  __copyright__="""  Copyright (c) 2006 by ACcESS MNRF  __copyright__="""  Copyright (c) 2006 by ACcESS MNRF
18                      http://www.access.edu.au                      http://www.access.edu.au
19                  Primary Business: Queensland, Australia"""                  Primary Business: Queensland, Australia"""
# Line 24  __date__="$Date$" Line 26  __date__="$Date$"
26  from esys.escript import *  from esys.escript import *
27  from esys.escript.pdetools import SaddlePointProblem  from esys.escript.pdetools import SaddlePointProblem
28  from esys.escript.linearPDEs import LinearPDE  from esys.escript.linearPDEs import LinearPDE
29  from esys.finley import Rectangle  from esys.finley import ReadMesh
30    
31    
32  rho=1.  rho=0.
33  lam_lmbd=1.  lam_lmbd=1.
34  lam_mu=1.  lam_mu=1.
35  g=9.81  g=9.81
# Line 54  class SlippingFault(SaddlePointProblem): Line 56  class SlippingFault(SaddlePointProblem):
56           self.__pde_u.setValue(A=A,q=fixed_u_mask,Y=-kronecker(Function(self.domain))[d-1]*g*density,y=traction)           self.__pde_u.setValue(A=A,q=fixed_u_mask,Y=-kronecker(Function(self.domain))[d-1]*g*density,y=traction)
57    
58        def inner(self,p0,p1):        def inner(self,p0,p1):
59           return integrate(p0*p1,FunctionOnContactZero(self.__pde_p.getDomain()))           return integrate(p0*p1,FunctionOnContactZero(self.domain))
60    
61        def solve_f(self,u,p,tol=1.e-8):        def solve_f(self,u,p,tol=1.e-8):
62           self.__pde_u.setTolerance(tol)           self.__pde_u.setTolerance(tol)
63           self.__pde_u.setValue(y_contact=p)           self.__pde_u.setValue(y_contact=-p)
64           return  self.__pde_u.getSolution()           return  self.__pde_u.getSolution()
65    
66        def solve_g(self,u,tol=1.e-8):        def solve_g(self,u,tol=1.e-8):
67           dp=self.slip-jump(u)           dp=-(self.slip-jump(u))
68           return  dp           return  dp
69    
70    
71  s=numarray.array([0.,1.,1.])  s=numarray.array([0.,1.,1.])
72  NE=3  dom=ReadMesh("meshfault3D.fly")
 dom=Rectangle(NE,NE,order=2)  
73  prop=SlippingFault(dom)  prop=SlippingFault(dom)
74  d=dom.getDim()  d=dom.getDim()
75  x=dom.getX()[d-1]  x=dom.getX()[d-1]
76  mask=whereZero(x-inf(x))*numarray.ones((d,))  mask=whereZero(x-inf(x))*numarray.ones((d,))
77  u0=Vector(0.,Solution(dom))  u0=Vector(0.,Solution(dom))
78  p0=Vector(0.,FunctionOnContactZero(dom))  p0=Vector(1.,FunctionOnContactZero(dom))
79  prop.initialize(fixed_u_mask=mask,slip=s, density=rho,lmbd=lam_lmbd, mu=lam_mu)  prop.initialize(fixed_u_mask=mask,slip=Data(s,FunctionOnContactZero(dom)), density=rho,lmbd=lam_lmbd, mu=lam_mu)
80  u,p=prop.solve(u0,p0,relaxation=1.,iter_max=50,tolerance=0.01)  u,p=prop.solve(u0,p0,iter_max=50,tolerance=0.01)
81  saveVTK("dis.xml",u=u)  saveVTK("dis.xml",u=u)
82  saveVTK("fault.xml",sigma=p,s=jump(u))  saveVTK("fault.xml",sigma=p,s=jump(u))

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