EDEM API - Contact Model Example: Energy Loss
Altair EmployeeOverview
Attached to this post you will find the source code and the compiled dll file for the calculation of the collision energy loss. The model gives the total cumulative energy loss, and the calculation is done based on the work of the damping components of the normal force, tangential force, and torque. The collision energy loss has been used in the mining industry in which the comminution efficiency of ball and SAG mills is related to the energy loss.
The work of the normal damping force is given by:
in which the 
is the damping component of the normal force, v is the relative velocity between the two elements, the subscripts t and t-1 indicate the current and previous timestep, respectively and 
is the simulation timestep.
The work of the tangential damping force, and torque are given, in a similar way, by:
in which 
is the damping component of the tangential force, 
is the damping component of the and ω is the angular velocity of an element.
To use the API first you have to put the EnergyLoss.dll file in the same folder as the EDEM simulation files. Once you open your simulation, under the creator tab, go to Physics, make sure that Particle to Particle is selected, then click on Edit Contact Chain. Under Plug-in Models, check EnergyLoss to enable the model. Figure 1 shows the step by step of how-to setup the model.
Usage/Installation Instructions
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Comments
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Can you give me an article about this example？
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