000014933 001__ 14933
000014933 005__ 20161115100206.0
000014933 04107 $$aeng
000014933 046__ $$k2016-08-21
000014933 100__ $$aLi, Yaning
000014933 24500 $$aAuxetic effects induced by re-entrant angle and chirality with large deformation

000014933 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014933 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014933 506__ $$arestricted
000014933 520__ $$2eng$$aSamma [y The two basic mechanisms of the auxetic effects for open-cell structures are: (l) re-entrant angle, and (2) cell rotation. To explore and compare the auxetic effects caused by the two mechanisms under large deformation, representative structures from each category (the re- entrant honeycombs and chiral cells) were studied. Analytical analysis, finite element (FE) simulations and experiments on 3D printed specimens were integrated to explore the finite deformation of these structures. Thorough Finite Element (FE) simulations were performed to study the influences of independent non-dimensional geometric parameters on the deformation mechanisms including auxetic effects and instability of these structures. The limiting strains for preserving auxetic effects were obtained. Compared with the re-entrant honeycomb, the chiral structures were shown to be able to preserve auxetic effects for much larger deformation. Also, by adding a reinforced core to the basic chiral structure, the auxetic effects can be effectively enlarged.

000014933 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014933 653__ $$a

000014933 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014933 720__ $$aLi, Yaning
000014933 8560_ $$ffischerc@itam.cas.cz
000014933 8564_ $$s213623$$uhttps://invenio.itam.cas.cz/record/14933/files/TS.FS09-2.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3438, code TS.FS09-2.05
.
000014933 962__ $$r13812
000014933 980__ $$aPAPER