Phase field modeling of dislocation transmission across coherent interfaces - Prof. Shen Yao, School of Material Science and Engineering
Project:  Phase field modeling of dislocation transmission across coherent interfaces
Abstract:  This project is to study the critical stress for a dislocation to transmit across a coherent phase interface and the MEP (Minimum Energy Path) for this process, which is important to investigate the superhardness of nanoscaled multilayers by the mechanism of dislocations. A phase field theory model for dislocations has been set up based on improved phase field microelasticity theory, Peierls-Nabarro model, and NEB (Nudged Elastic Band) method. This model can simulate the behavior, including movement and reactions, of discrete dislocations and dislocation networks in inhomogeneous anisotropic media including holes, interfaces, surfaces, etc. This model is computation intensive, so it is parallelized by MPI (Massage Passing Interface) method and implemented as a C++ package in GPU+CPU system.
Our Lab is granted as State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering.
Research team: 
  1. Lead PI: Yao Shen - Professor
  2. Members: Xiao Gu - Graduate student, Haocheng Li - Undergraduate student

上一条:High performance computing of complex particle interaction and continuum theory in soft matter science - Prof. Xu Zhenli, Institute of Natural Sciences and Department of Mathematics 下一条:First principles studies of ultra-hard materials under extremely high temperatures and pressures - Prof. Sun Hong, Department of Physics and Astronomy

Copyright ©2013 SJTU Network & Information Center All rights reserved.