Fourier-based spectral method solution to finite strain crystal plasticity with free surfaces

被引：36

作者：

Maiti, Tias ^{[1
]}

Eisenlohr, Philip ^{[1
]}

机构：

[1] Michigan State Univ, Chem Engn & Mat Sci, E Lansing, MI 48824 USA

来源：

SCRIPTA MATERIALIA | 2018年 / 145卷

基金：

美国国家科学基金会;

关键词：

Non-compact geometry; Void; Dilatation; I-2; invariant; TRANSFORMATION-INDUCED PLASTICITY; DEFORMATION; SIMULATIONS; MODEL;

D O I：

10.1016/j.scriptamat.2017.09.047

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A plastically dilatational material model is proposed that enables to simulate the mechanical response of non-compact geometries (containing free surfaces) by means of established spectral methods without any particular adaptations, i.e. in combination with arbitrary constitutive laws describing the remainder of the simulated geometry and under mixed boundary conditions. The versatility of this material model and more accurate representation of empty space in comparison to an isotropic elastic model employing low stiffness is demonstrated for the cases of void growth under biaxial extension and grain-scale deformation behavior of an oligocrystalline dogbone-shaped aluminum sample under uniaxial tension. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：37 / 40

页数：4

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