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How to use the Stress-Free Projection in Contact Analyze

denzel.li
Hello I used the Stress Free Projection in a contact simulation, it seems doesnot work as shows in below.
StressFreeProjection_1
StressFreeProjection_2
Then I tested the demo file,e8x68_job1.dat in Vol E, it showed good result:
StressFreeProjection_3
StressFreeProjection_4
The interesting thing is I merged these two models, then the stress-free projections seems not work in new model.
Is there function some limitations ? Attached is my first test model dat file.
Thanks
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  • 0
    Dear Denzel Li,
     
    With the Stress- free projection, when contact is detected, the coordinates of the nodes are relocated on
    the surface (node-to-segment) or an offset is taken into account (segment-to-segment), so that initial stresses are minimized.
    To notice the effect of Initial stress-free projection , there must be initial contact between the contact bodies. Only then contact is detected, and node projection is performed.
    Check the attached model.
    Regards,
     
    Kiranraj Shetty
     
     
    Attached Files (1)
Reply
  • 0
    Dear Denzel Li,
     
    With the Stress- free projection, when contact is detected, the coordinates of the nodes are relocated on
    the surface (node-to-segment) or an offset is taken into account (segment-to-segment), so that initial stresses are minimized.
    To notice the effect of Initial stress-free projection , there must be initial contact between the contact bodies. Only then contact is detected, and node projection is performed.
    Check the attached model.
    Regards,
     
    Kiranraj Shetty
     
     
    Attached Files (1)
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