The Linear Cohesion V2 Model
Similar to the Linear Cohesion model, this modifies the Base Contact Model by adding a normal cohesion force. This force is described as follows:
where A is calculated as follows:
However, in the “Linear cohesion V2” model, the radius of overlap squared is calculated as follows:
where R_{1} and R_{2} are the radius of the particles in contact in cases where element 2 is a geometry.
k is a cohesion energy density with units Jm^{3}.
This means that, for the same input parameters, the ratio between the forces calculated with “Linear cohesion V2” (F_{V2}) and “Linear Cohesion” (F) model will be as follows:
For the case of a uniform particle size distribution:
In this case, the cohesive force calculated in the Linear Cohesive V2 model is therefore four times smaller than the one calculated in the Linear Cohesive model (for a uniform particle size distribution).
In cases where the element 2 is a geometry, the force is two times smaller as follows:
Interaction  Configurable Parameters  Position 
Particle to Particle, Particle to Geometry  Click + to add cohesion to particleparticle or particlegeometry interactions. Set the energy density for each interaction. Energy density is the scaling function for the cohesiveness of the material. The SI units of energy density are J/m³.  Any 

Select Edit Contact Chain > Additional models and then select Linear Cohesion V2.

Click the configuration icon to define contact model parameters.
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