Transcript of a Conversation Between AI and a Human Discrete Element Modeling, Elastic and Shear Waves, and Its Relationship to Finite- Difference Modeling Human: What is discrete element modeling? AI: Discrete element modeling is a numerical method in...
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Transcript of a Conversation Between AI and a Human Discrete Element Modeling, Elastic and Shear Waves, and Its Relationship to Finite- Difference Modeling Human: What is discrete element modeling? AI: Discrete element modeling is a numerical method in which a continuous or granular medium is represented not as a continuum, but as a set of separate interacting elements: particles, grains, blocks, or fragments. The English name commonly used is Discrete Element Method — DEM. The basic idea is very simple. For example, a rock can be represented as a set of particles: 1,2,3, … , ????. The equations of motion are solved separately for each particle: ????2 ???????? ???????? 2 = ∑ ???????????? + ???????????????????? , ???????? ???? and for rotation: ???????????? ???????? = ∑ ???????????? . ???????? ???? Here ???????????? is the interaction force between two neighboring particles. It arises at their contact and may include a normal elastic force, a tangential force, friction, viscous resistan
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