Line Dislocation Dynamics Simulations with Complex Physics

Sills, Ryan B.; Aubry, Sylvie

doi:10.1007/978-3-319-42913-7_19-1

Cited by 1 publication

(2 citation statements)

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“…The stress field produces a Peach-Koehler force on the dislocation lines, leading to a driving force, F drive i , on every node i and, ultimately, a nodal velocity based on a mobility law function, v i = M F drive i . Therefore, the equation of motion in DDD is a first-order overdamped equation that can be written as (32,102)…”

Section: Discrete Dislocation Dynamicsmentioning

confidence: 99%

“…Future studies can also leverage the ongoing research focused on simulating the deformation of polycrystalline geometries with DDD (51-53); renewed interest in the role of dislocation-like defects (e.g., disconnections) in grain boundary dynamics (124); and the incorporation of other complex physics (32), such as interaction with point defects (54,55), precipitates (21,60), and radiation-induced damage (56-59).…”

Section: Using Discrete Dislocation Dynamics To Inform Constitutive M...mentioning

confidence: 99%

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Frontiers in the Simulation of Dislocations

Bertin

Sills

Cai

2020

Annu. Rev. Mater. Res.

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Dislocations play a vital role in the mechanical behavior of crystalline materials during deformation. To capture dislocation phenomena across all relevant scales, a multiscale modeling framework of plasticity has emerged, with the goal of reaching a quantitative understanding of microstructure–property relations, for instance, to predict the strength and toughness of metals and alloys for engineering applications. This review describes the state of the art of the major dislocation modeling techniques, and then discusses how recent progress can be leveraged to advance the frontiers in simulations of dislocations. The frontiers of dislocation modeling include opportunities to establish quantitative connections between the scales, validate models against experiments, and use data science methods (e.g., machine learning) to gain an understanding of and enhance the current predictive capabilities.

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Section: Discrete Dislocation Dynamicsmentioning

confidence: 99%