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Removing (deleting) elements surrounded between 2 consecutive time steps |
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August 28, 2019, 12:48 |
Removing (deleting) elements surrounded between 2 consecutive time steps
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New Member
Amir Amjadian
Join Date: Aug 2019
Location: Montreal
Posts: 1
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Hello,
I am trying to simplify a cutting process (milling) in which there is a disturbed uniform force in Z-direction acting on a workpiece (representing my tool force), moving from point A to B in a straight line in X-direction. Instead of dealing with subroutines such as DLOAD and VLOAD, I have decided to simulate it in some increments. I have attached the images of my work below.(The red hachure area should be deleted after each increment) The workpiece is clamped at the corners to four location pins (U1=U2=U3=UR1=UR2=UR3=0). My question is, how can I practically do such a thing with ABAQUS? I'm new to ABAQUS and I know how check the "Element Deletion" box in "Element Type" window. (is this better to be done in Implicit or Explicit?) pic2.JPG PIC.JPG deformation.JPG For more information: The thing is, my experiment doesn't exceed elastic domain. Therefore, I don't want to put plastic properties into my material properties and analysis. It's about milling a thin part with 6 mm thickness and 4mm depth of cut (DOC). Later on I am going to do an API and make a loop between python and ABAQUS. In Python, I am calculating the cutting force in Z-direction according to the nominal (desired) cutting depth. Then, I receive displacement results from ABAQUS and see the errors. I use these results from the simulation to change my nominal DOC and calculate the new cutting force in Python and again use this new cutting force in ABAQUS and see the errors (because there is deformation, it usually cuts less material, 3.5mm instead of 4mm for instance). It keeps going on until it reaches to an acceptable value. The other forces in other directions don't really matter to me, that's why I have decided to make this approach. Additionally, designing the whole tool is not my job. I am continuing and optimizing someone's work and the reference has been shared below. Nguyen, S. Q. (2016). Prediction and compensation of geometrical errors in milling process of thin components using a flexible configuration setup (Doctoral dissertation, École de technologie supérieure). Last edited by Amir88; August 31, 2019 at 13:52. |
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