Three-level modeling of fcc polycrystalline inelastic deformation: grain boundary sliding description

International Scientific Conference of Young Scientists: Advanced Materials in Construction and Engineering

材料科学;土木建筑工程;工业技术

Trusov, P.^1 ; Sharifullina, E.^1 ; Shveykin, A.^1

Perm National Research Polytechnic University, Mathematical Modeling Systems and Processes Department, Perm

614990, Russia^1

关键词: Computational experiment;    Consistency conditions;    Constitutive relations;    Different scale levels;    Inelastic deformation;    Internal structure;    Intragranular dislocation;    Three-level models;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/71/1/012081/pdf
DOI  :  10.1088/1757-899X/71/1/012081

来源: IOP

【 摘 要 】

This paper considers three-level model of polycrystalline inelastic deformation based on crystal plasticity that allow describing the internal structure evolution of the material. It is assumed that crystallite inelastic deformation is realized by intragranular dislocation sliding with lattice rotation. The paper focuses on the problem of grain boundary sliding description. To solve this problem the additional scale level is introduced into the model, evolution and closing equations are formulated on the basis of physical analysis. To connect different scale levels the consistency conditions of constitutive relations are used. The results of computational experiments under uniaxial tension of a polycrystalline pure copper representative volume are obtained.