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This overview discusses Discrete Dislocation Dynamics (DDD) simulations and their significance in understanding elastic properties and atomic-scale connections. It highlights typical problems faced at the mesoscale and explores the integration of these simulations with continuum theories. The coupling between DDD and continuum models provides valuable insights into dislocation interactions, the P-K force, line tension, and junction behaviors. These elements play a critical role in the constitutive modeling of materials, advancing our understanding of material mechanics.
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