EDEM _ polyhedral particles

taijin_huang

Hello, I see EDEM 's new feature in the community See a post about polyhedral particles, I want to do a polyhedral particle like this, but I don 't know much. I would like to ask how this is done or whether there are public tutorials and simulation files ? Thank you

Stephen Cole

Hi,

We have a tutorial on using the Linear Elastic Bond model here:

https://community.altair.com/discussion/33339/edem-tutorials

However it doesn't use polyhedral particles. I've attached the model from the release.

A few points to note:

• Under Bulk Material > Bulk Material 1 Select one of the particles and go to CADParticle or Cuboid. You an see a contact radius has been set. This allows the bonds to be formed even when the particles are not in physical contact.
• Under Bulk Material > Meta Particle the shape has been setup as usual
• Under Physics > Linear Elastic Bonding the bond properties have been set
• Under Geometries > New Section 4 > New Factory 0 this has been set to create meta-particle and Bond Creation Time is set to 'current time' which means the particles are bonded on creation

The only other setting for polyhedral bonding using the preserve contact is the Simulator > Advanced setting option. The 'preserve contact max distance' defaults to 4 Rmax. This is the point at which the bonds will break if they haven't already but can be modified if you want the material to be more flexible

PolyBond.zip

Regards

Stephen