/[escript]/trunk/modellib/test/python/drucker_prager.py
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Contents of /trunk/modellib/test/python/drucker_prager.py

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Revision 838 - (show annotations)
Tue Sep 5 22:45:55 2006 UTC (14 years ago) by gross
File MIME type: text/x-python
File size: 2558 byte(s)
drucker prager works now but there is still some work on the stepsize control needed.
1 # $Id$
2
3 __copyright__=""" Copyright (c) 2006 by ACcESS MNRF
4 http://www.access.edu.au
5 Primary Business: Queensland, Australia"""
6 __license__="""Licensed under the Open Software License version 3.0
7 http://www.opensource.org/licenses/osl-3.0.php"""
8
9 # run by scons build/posix/modellib/test/python/drucker_prager.passed from check out cd.
10
11 import os
12 from esys.modellib.mechanics import DruckerPrager
13 from esys.escript.modelframe import Link,Simulation
14 from esys.modellib.geometry import RectangularDomain, VectorConstrainer, UpdateGeometry
15 from esys.modellib.input import Sequencer, InterpolateOverBox
16 from esys.modellib.visualization import WriteVTK
17
18 try:
19 WORKDIR=os.environ['MODELLIB_WORKDIR']
20 except KeyError:
21 WORKDIR='.'
22
23
24 debug=True
25
26 dom=RectangularDomain(debug)
27 dom.l=[1.,1.,1.]
28 dom.n=[50,30,2]
29 dom.order=2
30 dom.integrationOrder=2
31
32
33 sq=Sequencer(debug)
34 sq.t=0
35 sq.t_end=0.8
36 sq.dt_max=0.02
37
38 iob=InterpolateOverBox(debug)
39 iob.domain=Link(dom,"domain")
40 iob.value_left_bottom_front=[1.,0.,0.]
41 iob.value_right_bottom_front=[0.,0.,0.]
42 iob.value_left_bottom_back=[1.,0.,0.]
43 iob.value_right_bottom_back=[0.,0.,0.]
44 iob.value_left_top_front=[1.,0.,0.]
45 iob.value_right_top_front=[0.,0.,0.]
46 iob.value_left_top_back=[1.,0.,0.]
47 iob.value_right_top_back=[0.,0.,0.]
48
49 iob.value_left_bottom_front=[1.,0.]
50 iob.value_right_bottom_front=[0.,0.]
51 iob.value_left_bottom_back=[1.,0.]
52 iob.value_right_bottom_back=[0.,0.]
53 iob.value_left_top_front=[1.,0.]
54 iob.value_right_top_front=[0.,0.]
55 iob.value_left_top_back=[1.,0.]
56 iob.value_right_top_back=[0.,0.]
57
58 m=DruckerPrager(debug)
59 m.domain=Link(dom,"domain")
60
61 cv=VectorConstrainer(debug)
62 cv.domain=Link(dom,"domain")
63 cv.value=Link(iob,"out")
64
65 cv.left=[True, False, False]
66 cv.right= [True, False, False]
67 cv.bottom= [False, True, False]
68 cv.top= [False, False, False]
69 cv.front= [False, False, True]
70 cv.back= [False, False, False]
71
72 m.velocity=Link(iob,"out")
73 m.prescribed_velocity=Link(cv,"value_of_constraint")
74 m.location_prescribed_velocity=Link(cv,"location_of_constraint")
75 m.rel_tol=0.0001
76
77 m.expansion_coefficient= 0.
78 m.bulk_modulus=1000.
79 m.shear_modulus=1.
80 m.plastic_stress=0.
81 m.friction_parameter=0.
82 m.dilatancy_parameter=0.
83 m.shear_length=m.shear_modulus*0.75*10000.
84
85
86 ug=UpdateGeometry(debug)
87 ug.domain=Link(dom,"domain")
88 ug.displacement=Link(m,"displacement")
89
90 vis=WriteVTK()
91 vis.t=Link(sq)
92 vis.scalar=Link(m,"plastic_stress")
93 vis.vector=Link(m,"velocity")
94 vis.tensor=Link(m,"stress")
95 vis.dt=0.5
96 vis.filename=WORKDIR+"/temp.xml"
97
98 s=Simulation([sq,m,vis],debug=True)
99 s.run()

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