Random fluctuations of material behaviour in FE-damage-analysis

被引：7

作者：

Kowalsky, U. ^{[1
]}

Zuemendorf, T. ^{[1
]}

Dinkler, D. ^{[1
]}

机构：

[1] TU Braunschweig, Inst Stat, D-38106 Braunschweig, Germany

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2007年 / 39卷 / 01期

关键词：

random fluctuations; viscoplasticity; creep damage; ductile damage; nonlocal material model; probability density function; Karhunen-Loeve expansion; statistical properties;

D O I：

10.1016/j.commatsci.2006.05.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper deals with a concept of the consideration of random fluctuations in material behaviour of metals, with focus on coupled viscoplastic and continuum damage modelling. Scattering material behaviour is represented by fluctuating sets of model parameters. The spatial distribution of the random field is obtained from Karhunen-Loeve expansion. Localisations are covered by a nonlocal gradientenhanced formulation. The concept is verified by structural analyses of a plate with hole including varying lengths of correlation and internal lengths, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：8 / 16

页数：9

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