An Adaptive Finite Element Approach to Atomic-Scale Mechanics: The Quasicontinuum Method

Abstract

Two primary thrusts have been put forth in our recent work on the quasicontinuum method. First, the method was generalized so as to allow for the treatment of materials involving multiple grains. A second key development has been the extension of the method to three dimensions. These developments have made it possible to examine the detailed microscopic mechanisms that accompany defect interactions. In particular, we have examined dislocation-grain boundary interactions, crack-grain boundary interactions and dislocation-dislocation interactions.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1998
Accession Number
ADA358720

Entities

People

  • D. Rodney
  • Ellad B. Tadmor
  • R. Phillips
  • Rachel A. Miller
  • V. B. Shenoy

Organizations

  • Brown University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Atomic Structure
  • Boundaries
  • Bravais Lattices
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Continuum Mechanics
  • Creep
  • Crystal Structure
  • Crystals
  • Estimators
  • Grain Boundaries
  • Materials
  • Mechanical Properties
  • Mechanics
  • Stresses

Fields of Study

  • Materials science
  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science and Engineering.