Press-Fit Contact modeling in Simlab using Optistuct Solber

Julio_21000
Julio_21000 Altair Community Member
edited June 2023 in Community Q&A

Hi,

does anyone know how to model a pressfit contact in Simlab using Optistruct Solber?

Thank you.

Best regards

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Best Answer

  • Santhoshkumar
    Santhoshkumar
    Altair Employee
    edited June 2023 Answer ✓

    Hello Julio,

    Do you want define the clearance in the contact (or) you want to design the snapfit?

    To define clearance in the contact, please refer the below image.

    Thanks & Regards,

    Santhoshkumar

    image

Answers

  • Santhoshkumar
    Santhoshkumar
    Altair Employee
    edited June 2023 Answer ✓

    Hello Julio,

    Do you want define the clearance in the contact (or) you want to design the snapfit?

    To define clearance in the contact, please refer the below image.

    Thanks & Regards,

    Santhoshkumar

    image

  • Ioannis_Makris
    Ioannis_Makris
    Altair Employee
    edited June 2023

    Hello Julio,

    To simulate a press fit contact one needs to enable the clearance value, as Santhoshkumar mentions above. To simulate a press-fit contact you need to input a value<0 in the clearance field. You also need to define a Non-Linear structutal solution. I am going to attach a screenshot that will probably help you understand the parameter a bit better.

    image

    image

    I hope these pictures help.

    Kindly,

    Ioannis Makris

     

  • Julio_21000
    Julio_21000 Altair Community Member
    edited June 2023

    Thank you both!

    It was really helpful.

    Best regards

    Julio

  • Julio_21000
    Julio_21000 Altair Community Member
    edited June 2023

    Hi again,

    I have adjusted the clearance as indicated but during the running of the simulation I get this error message:

    "

    A fatal error has occurred during computations:

    *** ERROR # 2605 ***

    CONTACT interface 88 has Secondary node 1556 that lies exactly on the

    Main surface with OPENGAP option. Impossible to define pushout direction.

    *** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.

     

    "

     

    I have tried with several options, like Overlap, but unfortunatelly the problem is not solved.

     

    Any idea?

     

    Thank you

  • Ioannis_Makris
    Ioannis_Makris
    Altair Employee
    edited June 2023

    Hello Julio,

    I get the feeling that we are speaking about shell elements here and not solids. Is that the case?

  • Julio_21000
    Julio_21000 Altair Community Member
    edited June 2023

    Hi Ioannis,

    yes, it was about shell elements. I have already corrected it. I am very new to Altair, therefore not still fully familiarized.

    Thank you.

    Best regards

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