ABAQUS读取场输出数据时不知道fieldOutputs的keys怎么办？

当我们Reading field output data时，不知道fieldOutputs的keys怎么办呢？

   答案很简单，利用

You can use the following to view all the available field data in a frame:

# For each field output value in the last frame,
# print the name, description, and type members.

for f in lastFrame.fieldOutputs.values():
    print f.name, ':', f.description
    print 'Type: ', f.type

    # For each location value, print the position.
  
    for loc in f.locations:
        print 'Position:',loc.position
    print

The resulting print output lists all the field output variables in a particular frame, along with their type and position.

COPEN    TARGET/IMPACTOR : Contact opening
Type:  SCALAR
Position: NODAL

CPRESS   TARGET/IMPACTOR : Contact pressure
Type:  SCALAR
Position: NODAL

CSHEAR1  TARGET/IMPACTOR : Frictional shear
Type:  SCALAR
Position: NODAL

CSLIP1   TARGET/IMPACTOR : Relative tangential motion direction 1
Type:  SCALAR
Position: NODAL

LE : Logarithmic strain components
Type:  TENSOR_2D_PLANAR
Position: INTEGRATION_POINT

RF : Reaction force
Type:  VECTOR
Position: NODAL

RM3 : Reaction moment
Type:  SCALAR
Position: NODAL

S : Stress components
Type:  TENSOR_2D_PLANAR
Position: INTEGRATION_POINT

U : Spatial displacement
Type:  VECTOR
Position: NODAL

UR3 : Rotational displacement
Type:  SCALAR
Position: NODAL

In turn, a FieldOutput object has a member values that is a sequence of FieldValue objects that contain data. Each data value in the sequence has a particular location in the model. You can query the FieldValue object to determine the location of a data value; for example,

displacement=lastFrame.fieldOutputs['U']
fieldValues=displacement.values

# For each displacement value, print the nodeLabel
# and data members.

for v in fieldValues:
    print 'Node = %d U[x] = %6.4f, U[y] = %6.4f' % (v.nodeLabel,
    v.data[0], v.data[1])

The resulting output is

Node = 1 U[x] = 0.0000, U[y] = -76.4580
Node = 3 U[x] = -0.0000, U[y] = -64.6314
Node = 5 U[x] = 0.0000, U[y] = -52.0814
Node = 7 U[x] = -0.0000, U[y] = -39.6389
Node = 9 U[x] = -0.0000, U[y] = -28.7779
Node = 11 U[x] = -0.0000, U[y] = -20.3237...

The data in the FieldValue object depend on the field output variable, which is displacement in the above example. The following command lists all the members of a particular FieldValue object:

fieldValues[0].__members__

The resulting output is

['instance', 'elementLabel', 'nodeLabel', 'position',
 'face', 'integrationPoint', 'sectionPoint', 
'localCoordSystem', 'type', 'data', 'magnitude',
 'mises', 'tresca', 'press', 'inv3', 'maxPrincipal',
 'midPrincipal', 'minPrincipal', 'maxInPlanePrincipal',
 'minInPlanePrincipal', 'outOfPlanePrincipal']

Where applicable, you can obtain section point information from the FieldValue object.

   里的办法，给他输出一下：

for fieldName in lastFrame.fieldOutputs.keys():
    print fieldName

看看都有啥keys，需要什么取什么即可。

https://www.researchgate.net/post/How_to_read_Nodal_forces_in_Abaqus_using_Python_scripts里面写得不对哈，RT是什么鬼

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