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Importing Part Geometries and
Assembling in ABAQUSWritten by D. MathisLayout of Steps
1. Create Geometry indesired CAD package
2. Save file format in .igs,.sat (other formatsavailable)
3. Geometrically Assemblein ABAQUS
4. Create tie constraints
between parts
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Creating Geometry in CAD
Package For this example, a simple box was
created in Pro-E This box was then saved as an .igs file,
but other file options are available Once the part has been created and
saved, select File in the ABAQUS toolbar,and scroll down to Import, and select part
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Importing Part
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Importing Part
A window will now pop up that allows you
to locate your saved part Note the variety of file extensions
available, but for this example the .igs fileextension was used
Choose your selected part file andextension, and select ok
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Choosing File & Extension
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Importing Part, .igs format
After clicking ok, a new window will pop up
that allows further import options of thechosen parts
You can now choose whether you wish to
import the part in a solid, shell, or wire-frame topology
The solid topology was chosen here since itwas desired to model a solid part
After having chosen your topology, click ok
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Importing Part, .igs format
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Importing a Second Part
For this example, a second box was
imported from the same saved part Repeat the previous steps of importing the
selected part, but on the Create Part froman Igs file window, select the scale tab
Click on the Multiply all lengths optionand type in 0.5. Now click ok.
A smaller box will now be created
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Scaling the Second Box
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Assembling the Parts
Now click on the Assembly Module
From the Assmbly Module, click on the instancepart option
Choose your selected parts, and click on the
Auto-offset from other instances option. Thisoption will keep your parts from initiallyoverlapping.
In order to be able to separately mesh the twoparts, choose the dependent option
Click ok
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Starting the Assembly
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Moving the Parts
You should now see both of your parts in
the view-port window For this example, the smaller box will be
moved to the upper corner of the big box To do this, click on the Translate Instance
Button, and select the smaller box
Then click done
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Moving Part
Now, select a point on the corner of the smaller
box that you want to move to the upper corner ofthe larger box
Now select a point on the corner of your larger
box where you wish point of your smaller box tomove to
The smaller box will now move to the selectedpoint
Click ok, in the bottom of the view-port window
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Geometrically Constraining the
Parts The smaller box now has to be
geometrically constrained so that it iscorrectly positioned on the larger box.
Click on the Constraint option on theToolbar. Note the different constraintoptions that are available
Here, choose the face to face option
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Geometrically Constraining the
Parts Now, we need to choose the face on the
smaller box that is currently butted upagainst the larger box. To choose thisface, select the Show/Hide Selection
Options that is located at the bottom of theview-port.
A options window will now pop up, click onthe Select the Entity Closest to thescreen to turn this option off
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Face to Face Constraint
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Face to Face Constraint
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Face to Face Constraint
Arrows will now appear on the figure
Use the flip option at the bottom of theview-port to make sure the arrows are
pointing in the same direction Click ok
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Face to Face Constraint
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Edge to Edge Constraint
The edge of the smaller box now has to be constrainedto the larger box
To do this, select Edge to edge in the Constraint Toolbarpull-down Now choose one of the edges of the smaller box, and
then the respective edge of the larger box. Note that is
easier to select if you turn off the Select the EntityClosest to the screen feature. Again, make sure thearrows are pointing in the same direction
Repeat this for the other edge. Note that the The
instance "box_1-1-1" is fully constrained messageappears in the lower text box once the box is fullyconstrained
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Creating Tie Constraint
Now that the parts have been assembled,
ABAQUS now needs to know how tophysically tie the two parts together
This will be accomplished here by usingthe Tie Constraint, which fuses the face ofthe smaller box to the larger box
To do this, click on Constraint in the filelibrary
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Creating Tie Constraint
A new constraint window will pop up, andchoose the tie constraint. Note here there are
multiple options for these constraints Now, choose the Master surface, which is the
face of the larger box and click done
Next, choose that the slave type be a surface Choose the face on the smaller box that is
butted up against the larger box.
Click done A new window will be brought up to edit the
constraint select ok
Ti C t i t
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Tie Constraint
N t M hi d P t
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Note on Meshing and Parameter
Defining The Part has now been completely
assembled and tied together. It shouldnow be noted, however, that meshing ofthe parts and section assignments shouldnow be done in the File library under therespective parts.
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