Efficient discrete element simulation analysis method for dynamically converting polyhedral particles into spherical particles

The invention discloses an efficient discrete element simulation analysis method based on dynamic conversion of polyhedral particles into spherical particles. The method comprises the following steps: setting a conversion threshold value before simulation calculation, and converting the polyhedral particles into spherical particles when the diameter of the polyhedral particles is smaller than the threshold value; the conversion threshold value ranges from 1 mm to 50 mm; traversing all the polyhedral particles in the particle system at intervals of a plurality of time steps, and if the diameter of the polyhedral particles is smaller than a conversion threshold value, converting the polyhedral particles into spherical particles: deleting the polyhedral particles, and adding the spherical particles with the same diameter into the particle system; the particle system mixed with the spherical particles and the polyhedral particles is applied to discrete unit simulation, the particle system in the industrial proces