Publication
Title
Micromechanical modelling of size effects in failure of porous elastic solids using first order plane strain gradient elasticity
Author
Abstract
In this paper a first order porous strain gradient elasticity model is presented. The constitutive equations have been obtained by higher order homogenization and the model is used with a failure criterion in order to discuss size effects in failure of porous elastic solids. The model contains two microstructural parameters namely the void volume fraction and the half void spacing. After an extended numerical validation of the porous strain gradient elasticity model, the boundary value problem of a plate with a hole under bi- and uniaxial remote tension is investigated. The numerical simulations have been performed varying both microstructural parameters in order to study. the influence of different microstructural dimensions on the onset of macroscopic failure. The numerical results show that the presented model is able to predict size effects and that size effects in failure do not only depend on the microstructural properties but also on the macroscopic geometry, loading conditions, and the failure mechanism. (C) 2009 Elsevier B.V. All rights reserved.
Language
English
Source (journal)
Computational materials science
Source (book)
Proceedings of the 18th International Workshop on Computational Mechanics of Materials (IWCMM-18), Beijing, China, 710 October 2008
Publication
Amsterdam : Elsevier science bv, 2009
ISSN
0927-0256
Volume/pages
46:3(2009), p. 647-653
ISI
000270346300019
Full text (Publishers DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 10.02.2015
Last edited 23.05.2017