How to define acceleration on 3 direction on a body?

msinghal
msinghal Altair Community Member
edited May 2021 in Community Q&A

I have a body in motion view. I want to define input accelerations on this body in all the three translation directions. How can I do that?

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Answers

  • Praful
    Praful
    Altair Employee
    edited May 2021

    Hello Mohit

     

    You can create motion on Markers. SO you'll have 3 motions, one for each direction.

    image

    regards

    Praful

     

  • msinghal
    msinghal Altair Community Member
    edited May 2021
    Praful Prabhu_20784 said:

    Hello Mohit

     

    You can create motion on Markers. SO you'll have 3 motions, one for each direction.

    image

    regards

    Praful

     

    Hi, 

    This solution does not work for me. I have some bushings in the systems and when I input the motions using markers, the solver outputs that the model is not assembled and it either removes all the bushings or makes them as a fixed joint. When I define motion using motion on a joint, everything works fine. 

    image

    Is there a way to solve this problem or is there some other way to specify the motion on the bodies?

  • AnanthK
    AnanthK
    Altair Employee
    edited May 2021

    Another idea might to specify body initial conditions as a velocity or displacement. 

    image

     

  • msinghal
    msinghal Altair Community Member
    edited May 2021
    Ananth Kamath Kota_20697 said:

    Another idea might to specify body initial conditions as a velocity or displacement. 

    image

     

    I have acceleration profiles with respect to time, that means the accelerations are not constant. So I think I cannot use the initial constant values for defining the accelerations.  

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