CONTINUUM MODELING OF DISLOCATION PLASTICITY:THEORY,NUMERICAL IMPLEMENTATION AND COMPARISON TO DISCRETE DISLOCATION SIMULATIONS

摘要：

The development of advanced materials is driven by continuous progress in the synthesis and control of materials microstructure on sub-micrometer and nanometer scales.Confined to these length-scales,many materials show strikingly different physical properties from their bulk counterparts,like a strong increase in flow stress with decreasing size.This calls for an increased effort on physically motivated continuum theories which can predict size-dependent plasticity by accounting for length scales associated with the dislocation microstructure.An important recent development has been the formulation of a Continuum Dislocation Dynamics (CDD) Theory which provides a kinematically consistent continuum description of the dynamics of curved dislocation simulations.

关键词： dislocation continuum theory plasticity simulation

作者: P.Gumbsch S.Sandfeld J.Senger D.Weygand T.Hochrainer

作者单位: Institute for Applied Materials IAM,Karlsruhe Institute of Technology (KIT),Germany Fraunhofer Insti Institute for Applied Materials IAM,Karlsruhe Institute of Technology (KIT),Germany Fraunhofer Institute for Mechanics of Materials IWM,Freiburg,Germany

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 7-15

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）