MDB-EDEM Co-Simulation: Is there an easier way to export forces on different components of a same part rather than exporting them one by one?

Hendrik Engbert
Hendrik Engbert Altair Community Member
edited March 2023 in Community Q&A

Hello everyone,

I am working on a EDEM-MotionSolve Co-Simulation and trying to export the results from my simulations. I have various components of the parts, and all of them are evaluated separately. The components are imported in EDEM via Coupling Server from an MotionView Model. So I am not able to simply merge them together before the start of the Co-Simulation, right? Otherwise the different components would not be detected by MotionSolve during simulation anymore.

So is there a way to club them together to get the total forces of the whole assemly group and get output as one go?

Greetings

HE

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  • Stephen Cole
    Stephen Cole
    Altair Employee
    edited March 2023 Answer ✓

    Hi Hendrik,


    As standard we can do All or individual parts in EDEM, however you can use Manual Selections to group the geometry.

     

    You can see more in lesson 17 of the e-learning https://learn.altair.com/enrol/index.php?id=147 and I also attached a quick video.


    Regards

    Stephen

  • Praful
    Praful
    Altair Employee
    edited March 2023

    Hi Hendrik - If you wish to do this through MotionView, you may merge the bodies and move all the different graphics definitions to one graphic, if these bodies move rigidly together.

    Note - Merging body is a irreversible step. I mean, the parts might have to be reimported if it needs to be reversed.

    To merge the bodies,

    • Select the bodies in the browser, right click and select Merge Bodies
    • In the dialog that appears, provide a label and a variable name for the new body. Click OK.

    image

    Merging bodies causes, all mass and inertia to be aggregated to the new body and all the graphics associated with the individual bodies are moved to the new body.

    This however may not be sufficient for you to achieve what you are looking for, because, while transfering to EDEM, the graphics are still individually transferred. To combine the graphics, select any graphic within the new body and turn on the other components within the geometry file.

    image

    You may delete the individual graphics that were added into the one. (else, they would be duplicate)

    Now, when selecting the Body for transfer to EDEM, all the components within that graphic should go as one component in EDEM.

    Hope this helps.

    Regards
    Praful

     

  • Hendrik Engbert
    Hendrik Engbert Altair Community Member
    edited March 2023

    Thank you for your answers. Through the manual selection I was able to solve my problem!

    Regards

    HE

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