Soft interface boundary conditions for EDEM coupling with FEA?

Hao Shi
Hao Shi Altair Community Member
edited May 2023 in Community Q&A

Hi Everyone,

I want to simulate an object penetrating through the two layers of materials: the hard particle layer at the top and the soft particle layer at the bottom.

The soft particle layer has a smaller particle size and is computationally more expensive. Is there a way to replace this soft bottom layer with a special boundary condition that can deform as a continuum block (force-deformation calculated by coupling to FEA)? Or maybe a special interface boundary that is not rigid to allow geometry to go through and give certain predefined resistance? 

Best regards,

Hao

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Best Answer

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

    Hi Hao,


    It depends on the type of deformation, however we don't currently have any default options for this.

     

    You could consider a step-by step aproach with an FEA tool like OptiStruct where you calculate the deformation and export that as a new CAD file for import to EDEM.  2-way coupling with OptiStruct is currently work in progress from the product team.

     

    Also you could scale up the smaller particles, so long as you are replicating the bulk behaviour you may not need to model the smaller particle size.

    Tutorial for exporting EDEM data to Hypermesh (for FEA solver) - https://community.altair.com/csm?id=kb_article_view&sysparm_article=KB0037368


    Regards

    Stephen

Answers

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

    Hi Hao,


    It depends on the type of deformation, however we don't currently have any default options for this.

     

    You could consider a step-by step aproach with an FEA tool like OptiStruct where you calculate the deformation and export that as a new CAD file for import to EDEM.  2-way coupling with OptiStruct is currently work in progress from the product team.

     

    Also you could scale up the smaller particles, so long as you are replicating the bulk behaviour you may not need to model the smaller particle size.

    Tutorial for exporting EDEM data to Hypermesh (for FEA solver) - https://community.altair.com/csm?id=kb_article_view&sysparm_article=KB0037368


    Regards

    Stephen

  • Hao Shi
    Hao Shi Altair Community Member
    edited May 2023

    Thanks, Stephen, now I know what options are available.

    Regards,

    Hao

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