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Influence of cell wall thickness variations on elastic stiffness of closed-cell cellular solids
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
2000 (English)In: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 42, no 7, 1327-1338 p.Article in journal (Refereed) Published
Abstract [en]

The stiffness of closed-cell low-density cellular solids, or solid foams, is affected by "imperfections" such as non-uniform cell shape and size, wavy distortions of cell walls, variations in cell wall thickness, etc. The present paper focuses on the influence of non-uniform cell wall thickness on stiffness. Calculations are performed on one model with different degrees of thickness variations. The model used is the flat-faced Kelvin structure, which consists of 14-sided polyhedra in a bcc arrangement. The results indicate that the stiffness of closed-cell cellular solids is not very sensitive to thickness variations. (C) 2000 Elsevier Science Ltd. All rights reserved.

Place, publisher, year, edition, pages
2000. Vol. 42, no 7, 1327-1338 p.
Keyword [en]
cellular solid, micro structure, constitutive behavior, modeling, imperfections, strength, models
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-13703DOI: 10.1016/S0020-7403(99)00054-5ISI: 000086816100006OAI: oai:DiVA.org:miun-13703DiVA: diva2:412710
Available from: 2011-04-26 Created: 2011-04-26 Last updated: 2011-05-29Bibliographically approved

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Grenestedt, Joachim L.
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