Open this publication in new window or tab >>2000 (English)In: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 42, no 7, p. 1327-1338Article 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.
Keywords
cellular solid, micro structure, constitutive behavior, modeling, imperfections, strength, models
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:miun:diva-13703 (URN)10.1016/S0020-7403(99)00054-5 (DOI)000086816100006 ()
2011-04-262011-04-262025-09-25Bibliographically approved