The Hertz-Mindlin Effective (Polyhedral) model

The Hertz-Mindlin Effective (Polyhedral) contact model is similar to the Hertz-Mindlin model used for spheres in EDEM, but the sphere radius is replaced with an effective sphere radius for each polyhedral.

The effective radius is defined by finding the radius of a sphere which has the same volume as the polyhedral particle as: 

The penetration depth, d is then substituted directly for normal overlap, δ n and defined as:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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