HyperCrash - temporary boundary condition

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello,

 

I would like to ask if there is a possibility to create temporary boundary condition. I would like to fix some nodes DOF except of a rotational movement. After a while this boundary condition should disappear (like a time function in a gravity load).

 

My other question is when I set the simulation time to 300 ms, in HyperView the results why only visible from 200 ms?

 

Thanks 

Sanyo

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2014

    Hi Sanyo,

     

    1) is your BC is on a rigid body?

     

    at what time you want to OFF the BC?

     

    If the BC is on rigid, I would suggest you to use /RBODY/OFF (Please go through the help for more information and how to use)

     

    2) can you share the engine out file?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2014

    FYI,

     

    check this Example 42 - Rubber Ring: Crush and Slide which uses BCSR/ROT/  in which rotational DoF is released.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2014

    Daer Prakash,

     

    I have uploaded an engine file. There the run time is set to 140, and in HyperView I can see it only from 40.

     

    Thanks for the help on the rigid body time dependence.

     

    But could you please help me how could I understand the example files? I see what are the goals, but I don't understand how could I build them into my model with the help of HM or HC image/emoticons/default_unsure.png' alt=':unsure:'> .

     

    Thank you!

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2014

    I wanted to ask also the unit of the Imposed displacement - rotation.

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