EDEM API Contact Model | Bonded-Particle - Suggestion for modification to increase overlap?

MQ
MQ Altair Community Member
edited November 2022 in Community Q&A

Hi Everyone,

I would like to modify the bonded contact model to increase the particles overlap when they are bonded (e.g., to about their equivalent radius). Can anyone please suggest how do I go about?

- Compression is not required in this case;

- To counter any repulsive forces (such as Hertz-Mindlin), I would simply pass the offseted value for overlap, but as I see from the code this is not calculated once m_BondStatus[0] = 1.

However, I am not sure where to begin.

Thank you,

Best regards,

MQ

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Answers

  • RWood
    RWood
    Altair Employee
    edited October 2022

    Hi,

    Apologies if I'm a little slow on the uptake but it's not totally clear to me what you're trying to achieve. When you say increase the overlap, are you wanting to change the physical/contact radius of the particle, or just the overlap variable that's used in the calculations?

    Cheers,

    Richard

  • MQ
    MQ Altair Community Member
    edited November 2022
    Richard Wood_20774 said:

    Hi,

    Apologies if I'm a little slow on the uptake but it's not totally clear to me what you're trying to achieve. When you say increase the overlap, are you wanting to change the physical/contact radius of the particle, or just the overlap variable that's used in the calculations?

    Cheers,

    Richard

    Hi Richard,

    Thanks for your reply.

    Actually, I would like to increase the overlap of the particles.

    In other words, they should not just be superficially in contact when bonded together, but kind of densified/fused together.

    Best regards,

    MQ

  • MQ
    MQ Altair Community Member
    edited November 2022
    Richard Wood_20774 said:

    Hi,

    Apologies if I'm a little slow on the uptake but it's not totally clear to me what you're trying to achieve. When you say increase the overlap, are you wanting to change the physical/contact radius of the particle, or just the overlap variable that's used in the calculations?

    Cheers,

    Richard

    Hi Richards,

    Any advise on this?

    Thanks.

    Best regards,

    MQ

  • RWood
    RWood
    Altair Employee
    edited November 2022
    MQ said:

    Hi Richards,

    Any advise on this?

    Thanks.

    Best regards,

    MQ

    Hi,

    I believe you have gone down the correct path based on another thread you posted, but as you now know you can scale the particles within the particle manager. This is probably the best way to go about this.

    Cheers

    Richard

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