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Is there a way to apply a force to an individual particle?

I have particles bonded together in the shape of a beam, and I want to apply force to some specific particles so that the entire beam follows it. Currently, in the Creater section, I only see the option to add geometry and assign motion to it. But what if I want to impose motion directly on a particular particle? I see that it may be possible through the API, but I couldn't find any starting point.

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Stephen Cole

Hi,

The rigid link condition maybe what you want. We can't apply a motion to a partilce (unless writing a cusomg API model) but you can apply the motion to a geometry. And specify the Rigid Link condition so the particle tracks this.

https://2025.help.altair.com/2025/edem/topics/creator_tree_geometries/rigid_link_condition_t.htm

RedRum

Hi,

I think this feature isn't available in the 2022 version. Also this isn't what I want. When I specify force on a geometry, the particles will follow it and interaction of geometry with other particles in the domain doesn't change the motion of the geometry.

Can you guide me to write the custom API that can help me specify forces on intended particles.

Stephen Cole

Hi,

You can see the introduction to API video series here:

https://www.youtube.com/watch?v=TAbvgzrGP8Y

Also these tutorails may help:

https://community.altair.com/discussion/39743/edem-api-4100-variable-cohesion

https://community.altair.com/discussion/39686/edem-api-4200-field-data

The tutorials are from the newer version of EDEM, but the principle of using the API is the same.

Regards

Stephen

RedRum

May I request a dedicated video for my problem?