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dkeenan11-Visitor
1-Visitor
August 4, 2014
Question

How to simulate a bolted joint with a round hole and slot

  • August 4, 2014
  • 2 replies
  • 10707 views

I have a assembly with two parts that use a round hole and slot for the bolted joint. I cannot use the fasteners tool due to the slot, how do I model the bolted joint?2014-08-04_14-15-35.jpg

    2 replies

    D
    danderson1-Visitor
    1-Visitor
    August 4, 2014

    Have you tried solid models with the new preload constraint now availible in Creo 2 Simulate or newer?

    D
    dkeenan11-VisitorAuthor
    1-Visitor
    August 4, 2014

    I am using Creo 2.0, but I am not familar with the solid models and preload you are referring to. Is there a reference doc you can point me to?

    D
    danderson1-Visitor
    1-Visitor
    August 4, 2014

    Dan,

    Try using a simplified 3d model of the bolt and nut using the following
    Preload.jpg

    G
    gfraulini17-Peridot
    17-Peridot
    September 2, 2014

    I have never tried to use the preload feature with a solid bolt that was an unique part (screw + nut), but I've always had screw and nut linked with a bonded region.
    I think is the same thing, I don't see why not.
    To apply the right preload you have to do like the fastener:
    - apply a first preload F1
    - put a measure of force on the area of the volume region where you've placed the preload or the thermal load on the bolt
    - first analysis
    - take note of the measure of force F2
    - modify the preload in this manner F1^2/F2
    - second analysis

    Bye

    R
    Regina_H1-Visitor
    1-Visitor
    January 8, 2020

    Hello,

     

    I tried to simulate a threaded connection with solid bolts and the preload feature, because I want to compare the results to the same model with fasteners instead of solid bolts. The procedure is clear to me in theory. Practiacally the simulation always (except of the one time I succeeded to get measure F2) failed tue to insufficient constraints. I have calculated the new preload value and want to verify in another simulation. But it always failes in the second loop because of insufficient constraints (single pass analysis). A trial with MPA and grade 1 succeeds. 

    There is a bonded region between bolt and threaded part and a contact between the head of the bolt and the clamped part. All other constraines stayed the same to the model with the fasteners.

    I allready inserted a spring to support the clamped part. 

    I assume there is a convergence problem but have no idea how to solve it.

    Creo Simulate is Version 2.0

     

    Many thanks in advance for any support!

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