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Multi-Scale Discrete Dislocation Plasticity Analysis: Application to Nano-indentation



S M. Khan, Lyle E. Levine


To closely analyze the dislocation structure evolution during nano-indentation, a multi-scale discrete dislocation plasticity code is modified to include nano-indentation loading. This code couples two length scales, discrete dislocation dynamics and continuum finite element and has been successfully applied to analyze various problems in mechanics and materials science. Description of the multi-scale code is presented followed by the methodology to implement nano-indentation loading in the model. The numerical accuracy of the new model is investigated and shown to be excellent for small contact area between indenter tip and the specimen. Representation results are shown for dislocation structure evolution during nano-indentation.
Proceedings Title
NSTI NanoTech 2006 Conference | | | NSTI
Conference Dates
May 7-11, 2006
Conference Location
Conference Title
NSTI Nanotechnology Conference Proceedings


dislocation dynamics, dislocation structure, multi-scale, nano-indentation, plasticity


Khan, S. and Levine, L. (2008), Multi-Scale Discrete Dislocation Plasticity Analysis: Application to Nano-indentation, NSTI NanoTech 2006 Conference | | | NSTI, Undefined (Accessed December 10, 2023)
Created October 16, 2008