To run multiple models simultaneously, use openseespy.Model(...) (capital M)
-instead of the regular openseespy.model(...) (lowercase m) function, and invoke
-all subsequent modeling functions (e.g. node(...), element(...), fix(...), etc)
-as methods on the object returned from Model() instead of the openseespy submodule
-directly. For example, instead of:
import opensees.openseespy as ops
-ops.model("basic", "-ndm", 2, "-ndf", 3)
-ops.node(1, 2.0, 3.0)do
+ +The best practice for modeling in Python is to create a model class
+by calling the opensees.openseespy.Model(...) constructor (note the capital “M”).
+All standard OpenSees functions, as documented
+
+
+
+
+
+
+
+here
+
+
+can be called as methods on the object that is retured. For example:
import opensees.openseespy as ops
model = ops.Model(ndm=2, ndf=3)
model.node(1, 2.0, 3.0)The first scripting interface to OpenSees used a programming language
+called Tcl, which continues to be supported.
+To execute Tcl commands from a Python script, just create an instance
+of the opensees.openseespy.Model class and call its eval() method:
import opensees.openseespy as ops
+model = ops.Model()
+model.eval("model Basic -ndm 2")
+model.eval("print -json")Full Tcl files can be conveniently executed in this way. For example,
+if a Tcl file called model.tcl exists in the current working directory:
import opensees.openseespy as ops
+model = ops.Model()
+with open("model.tcl", "r") as f:
+ model.eval(f.read())python EigenAnal_twoStoryShearFrame8.pypython -m opensees EigenAnal_twoStoryShearFrame8.tclimport opensees.openseespy as ops
@@ -732,7 +732,7 @@ Create the model
+
model BasicBuilder -ndm 2 -ndf 3
@@ -759,13 +759,13 @@ Create the model Python
Tcl
@@ -781,7 +781,7 @@ Create the model
+
model.node(1, 0., 0.)
model.node(2, L , 0.)
@@ -797,7 +797,7 @@ Create the model
+
node 1 0. 0. ;
node 2 $L 0. ;
@@ -826,13 +826,13 @@ Create the model Python
Tcl
@@ -848,7 +848,7 @@ Create the model
+
model.fix(1, 1, 1, 1)
model.fix(2, 1, 1, 1)
@@ -860,7 +860,7 @@ Create the model
+
fix 1 1 1 1;
fix 2 1 1 1;
@@ -887,13 +887,13 @@ Create the model Python
Tcl
@@ -909,7 +909,7 @@ Create the model
+
model.mass(3, m , 0., 0. )
model.mass(4, m , 0., 0. )
@@ -923,7 +923,7 @@ Create the model
+
mass 3 $m 0. 0. ;
mass 4 $m 0. 0. ;
@@ -954,13 +954,13 @@ Create the model Python
Tcl
@@ -976,7 +976,7 @@ Create the model
+
model.element("ElasticBeamColumn", 1, 1, 3, Ac, Ec, 2.*Ic, TransfTag)
model.element("ElasticBeamColumn", 2, 3, 5, Ac, Ec, Ic, TransfTag)
@@ -992,7 +992,7 @@ Create the model
+
element elasticBeamColumn 1 1 3 $Ac $Ec [expr 2.*$Ic] $TransfTag;
element elasticBeamColumn 2 3 5 $Ac $Ec $Ic $TransfTag;
@@ -1031,13 +1031,13 @@ Define recorders Python
Tcl
@@ -1053,7 +1053,7 @@ Define recorders
+
for k in range(numModes):
model.recorder("Node", f"eigen {k}", file=f"modes/mode{k}.out", nodeRange=[1, 6], dof=[1, 2, 3])
@@ -1065,7 +1065,7 @@ Define recorders
+
foreach k [range $numModes] {
recorder Node -file [format "modes/mode%i.out" $k] -nodeRange 1 6 -dof 1 2 3 "eigen $k"
@@ -1465,7 +1465,7 @@ Display mode shapes
+
diff --git a/examples/concretesurface/index.html b/examples/concretesurface/index.html
index 7b500fa3..d1b95cf8 100644
--- a/examples/concretesurface/index.html
+++ b/examples/concretesurface/index.html
@@ -911,7 +911,7 @@
-
+
diff --git a/examples/example1/index.html b/examples/example1/index.html
index 35af2cf4..cbcf9819 100644
--- a/examples/example1/index.html
+++ b/examples/example1/index.html
@@ -1415,13 +1415,13 @@ Model
Tcl
Python(RT)
@@ -1437,7 +1437,7 @@ Model
-
+
model -ndm 2 -ndf 2
@@ -1448,7 +1448,7 @@ Model
-
+
import opensees.openseespy as ops
@@ -1485,13 +1485,13 @@ Model
Tcl
Python(RT)
@@ -1507,7 +1507,7 @@ Model
-
+
# Create nodes & add to domain
# tag X Y
@@ -1523,7 +1523,7 @@ Model
-
+
# Create nodes
# tag X Y
@@ -1551,13 +1551,13 @@ Model
Tcl
Python(RT)
@@ -1573,7 +1573,7 @@ Model
-
+
# Set the boundary conditions
# tag X Y
@@ -1588,7 +1588,7 @@ Model
-
+
# set the boundary conditions
# nodeID xRestrnt? yRestrnt?
@@ -1617,13 +1617,13 @@ Model
Tcl
Python(RT)
@@ -1639,7 +1639,7 @@ Model
-
+
# Create Elastic material prototype
uniaxialMaterial Elastic 1 3000;
@@ -1651,7 +1651,7 @@ Model
-
+
# Create Elastic material prototype
model.uniaxialMaterial("Elastic", 1, 3000)
@@ -1682,13 +1682,13 @@ Model
Tcl
Python(RT)
@@ -1704,7 +1704,7 @@ Model
-
+
element Truss 1 1 4 10.0 1;
element Truss 2 2 4 5.0 1;
@@ -1717,7 +1717,7 @@ Model
-
+
# Type tag nodes Area material
model.element("Truss", 1, (1, 4), 10.0, 1 )
@@ -1772,13 +1772,13 @@ Loads
Tcl
Python(RT)
@@ -1794,7 +1794,7 @@ Loads
-
+
set loads {4 100 -50}
@@ -1805,7 +1805,7 @@ Loads
-
+
loads = {4: [100, -50]}
@@ -1829,13 +1829,13 @@ Loads
Tcl
Python(RT)
@@ -1851,7 +1851,7 @@ Loads
-