python - 更改 Abaqus 中的默认元素类型

Question

Abaqus 选择的默认元素是 C3D8R，我想将其更改为 C3D8I。我知道如何在 CAE 中更改元素类型，甚至使用 Python 递归更改元素类型，但不知道如何更改默认值。

问题是，当我分区和重新网格化时，我之前的选择被覆盖并生成默认的 C3D8R。

谢谢

R。

编辑:感谢 Simulia 社区的 Fernando C.，可以使用以下调整。但仍在寻找更好的解决方案!

Remy,

I think the default element is hard-coded and so we don't have a setting that you can change.

But don't despair. You can use methodCallback to change it automatically after the part/instance is created.

You can put this in an abaqus_v6.env file so it is always doing that.

import methodCallback

from abaqus import *

from abaqusConstants import *

def changeDefaultElementType(callingObject, arguments, keywordArguments, userData):

    print 'Changing the default element type'

    p = getMethodReturnValue()

    p.setElementType(

        elemTypes=(

            ElemType(elemCode=C3D8I, elemLibrary=STANDARD, secondOrderAccuracy=OFF, distortionControl=DEFAULT),

            ElemType(elemCode=C3D6, elemLibrary=STANDARD),

            ElemType(elemCode=C3D4, elemLibrary=STANDARD)

            ),

        regions=(p.cells.getSequenceFromMask(('[#1 ]', ), ), )

        )

methodCallback.addCallback(ModelType, 'Part', changeDefaultElementType, callAfter=True)

The example is a little rough, you might want to polish it a little more (For example changing the element type only for 3d parts, etc).

Answer 1

Abaqus/CAE 2018 中将提供更改默认单元类型。

同时，可以将以下函数添加到custom_v6.env中。 (C:\Program Files\Dassault Systemes\SimulationServices\V6R2017x\Abaqus\win_b64\SMA\site\custom_v6.env)

def onCaeStartup():
    import methodCallback
    from mesh import ElemType
    from job import ModelJobType

    ## Function to be called when an input file is written
    def checkElementType(callingObject, arguments, keywordArguments, userData):
        print 'Checking element types in the model'

        # Get the name of the job from the command
        a = str(callingObject).split("jobs['")[1]
        job = a.split("']")[0]

        model = mdb.jobs[job].model
        ra    = mdb.models[model].rootAssembly

        # Query the Element Types in the assembly and display them
        elemType=[]
        for instance in ra.instances.keys():    
            for cell in ra.instances[instance].cells:
                if ra.getElementType(region=cell,elemShape=HEX).elemCode not in elemType:
                    elemType.append(ra.getElementType(region=cell,elemShape=HEX).elemCode)
                    print 'INSTANCE: '+instance +' = '+ ra.getElementType(region=cell,elemShape=HEX).elemCode

    # Define the callback. When the writeInput method is called on a ModelJobType object, the function checkElementType is executed.                
    methodCallback.addCallback(ModelJobType, 'writeInput', checkElementType)