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Elastic properties of microcomponents under uniaxial stress
Author(s) -
Jöchen K.,
Böhlke T.
Publication year - 2007
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200700399
Subject(s) - voronoi diagram , materials science , finite element method , material properties , stress (linguistics) , distribution (mathematics) , statistical physics , mechanics , composite material , geometry , physics , mathematics , thermodynamics , mathematical analysis , linguistics , philosophy
In order to develop highly stressable microcomponents for various applications, the structural behavior of such parts has to be examined with respect to an accurate prediction of the elastic and plastic characteristics. When simulating microparts, the major challenge is to capture the significant material heterogeneities, which are the result of the small geometrical dimensions of the components being of the same order of magnitude as the grain size. For this reason, the concept of effective properties fails and apparent properties have to be considered. In this paper we examine the elastic properties of microspecimens made of gold. Therefore, various finite element simulations have been evaluated statistically in order to identify the characteristic parameters of the distribution. Polycrystals are modeled as a periodic Voronoi tesselation with a uniform distribution of crystal orientations. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)