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Modelling of the mechanical behaviour of regular metallic hollow-sphere packings under compressive loads. (English) Zbl 1189.74092
Ganghoffer, Jean-François (ed.) et al., Mechanics of microstructured solids. Cellular materials, fibre-reinforced solids and soft tissues. Papers based on the presentations at the 11th EUROMECH-MECAMAT conference, Torino, Italy, March 10–14, 2008. Berlin: Springer (ISBN 978-3-642-00910-5/hbk; 978-3-642-00911-2/ebook). Lecture Notes in Applied and Computational Mechanics 46, 91-99 (2009).
Summary: This paper is devoted to the study of the mechanical behaviour under compression of hollow-sphere packings and, especially, to the characterization of the mechanisms that govern their compaction. The aim of this work is to understand how the architecture of such materials governs their overall mechanical behaviour through a combined approach involving both experiments and modelling. In this work, emphasis is put on the influence of local plasticity and buckling of spheres on the effective behaviour of packings. A finite element modelling is developed taking into account those mechanisms in order to characterize the contributions of the stiffness of the meniscuses and the hollow spheres respectively on the effective stiffness of packings.
For the entire collection see [Zbl 1189.74006].
MSC:
74Q15 Effective constitutive equations in solid mechanics
74S05 Finite element methods applied to problems in solid mechanics
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