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The term kinetic energy E_{c} when modelling in DEM is needed to define which state the simulation is in: quasi-static or dynamic.

For a quasi-static system, we have E_{c} < 10^{-7} and for dynamic system we’ll have E_{c}>10^{-7} (J).

E_{c} is calculated by the formula: \sum {\frac{1}{2}} ( {m_{i}}{v_{i}}^{2}+\omega ( I{{\omega }^{T}} ) )

Where:

m_{i}: density of the particle i

v_{i}: velocity of particles

I: inertia tensor

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