Nonlinear FE analysis of residual stresses induced by dislocations in heterostructures

被引：27

作者：

Dluzewski, P

Maciejewski, G

Jurczak, G

Kret, S

Laval, JY

机构：

[1] Polish Acad Sci, Inst Fundamental Technol Res, PL-00049 Warsaw, Poland

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[3] ESPCI, CNRS, UPR 05, Phys Solide Lab, F-75231 Paris 05, France

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2004年 / 29卷 / 03期

关键词：

microscopy and microanalysis techniques; nonlinear elasticity; dislocation structure; finite element analysis; residual stresses; layered structures;

D O I：

10.1016/j.commatsci.2003.10.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper the field theory of dislocations is used in the finite element analysis of residual stresses in epitaxial layers. By digital processing of the HRTEM image of a GaAs/ZnTe/CdTe system the tensor maps of dislocation distribution are extracted. Such obtained maps are used as the input data to the finite element code. The mathematical foundations of this code are based on the compatibility equations for lattice distortions. The surface tension induced by misfit dislocations is considered here in terms of a 3D boundary-value problem for stress equilibrium in the interfacial zone. The numerical results show how strongly the surface tension depends on the nonlinear elastic behaviour of the crystal structure. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：379 / 395

页数：17

共 34 条

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