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AuthorMousanezhad, D.
AuthorEbrahimi, H.
AuthorHaghpanah, B.
AuthorGhosh, R.
AuthorAjdari, A.
AuthorHamouda, A.M.S.
AuthorVaziri, A.
Available date2016-01-19T14:20:36Z
Publication Date2015-08-01
Publication NameInternational Journal of Solids and Structures
Identifierhttp://dx.doi.org/10.1016/j.ijsolstr.2015.03.036
Citation"Spiderweb honeycombs" Mousanezhad, D.; Ebrahimi, H.; Haghpanah, B.; Ghosh, R.; Ajdari, A. et al., (2015) International Journal of Solids and Structures vol. 66 p. 218-227
ISSN0020-7683
URIhttp://hdl.handle.net/10576/4106
AbstractSmall and large deformation in-plane elastic response of a new class of hierarchical fractal-like honeycombs inspired by the topology of the “spiderweb” were investigated through analytical modeling, detailed numerical simulations, and mechanical testing. Small deformation elasticity results show that the isotropic in-plane elastic moduli (Young’s modulus and Poisson’s ratio) of the structures are controlled by dimension ratios in the hierarchical pattern of spiderweb, and the response can vary from bending to stretching dominated. In large deformations, spiderweb hierarchy postpones the onset of instability compared to stretching dominated triangular honeycomb (which is indeed a special case of the proposed spiderweb honeycomb), and exhibits hardening behavior due to geometrical nonlinearity. Furthermore, simple geometrical arguments were obtained for large deformation Poisson’s ratio of first order spiderweb honeycombs, which show good agreement with numerical and experimental results. Spiderweb honeycombs exhibit auxetic behavior depending on the non-dimensional geometrical ratio of spiderweb.
SponsorNPRP award [NPRP 5-1298-2-560] from the Qatar National Research Fund (a member of the Qatar Foundation)
Languageen
PublisherElsevier Ltd
SubjectCellular structures
Hierarchy
Large deformation mechanisms
Auxetic behavior
Instability
TitleSpiderweb Honeycombs
TypeArticle
Pagination218-227
Volume Number66
dc.accessType Abstract Only


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