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Theory overview

Theory overview​

This page introduces background material on the discrete element method (DEM) and related theory in Phynexis. Use the sibling pages in Theory for full detail on each topic.

Core DEM concepts​

  • DEM basics: overview of the discrete element method, including contact detection, contact models, time integration, and critical timestep.
  • Discrete to continuum: derivation of macroscopic stress, strain, and constitutive tangent moduli from particle-level contact data (page body Chinese draft—see sidebar label).

Particle representations​

  • Particle models: mathematical formulations of poly-super-ellipsoid and poly-super-quadrics supported in Phynexis (page body Chinese draft—see sidebar label).