caa a22 4500 463226259 CHVBK 20180405153228.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1684-9 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1684-9 Lim Teik-Cheng School of Science and Technology, SIM University (UniSIM), 535A Clementi Road, 599490, Singapore, Republic of Singapore aut Kinematical studies on rotation-based semi-auxetics [Elektronische Daten] [Teik-Cheng Lim] Auxetic materials are those which exhibit negative Poisson's ratio, i.e. these solids expand transversely when stretched longitudinally. In recent years the concept of semi-auxetics has been examined for cellular solids based on combination of re-entrant and hexagonal microstructures. In this paper we identify a type of rotating unit that gives positive Poisson's ratio so that a study can be made on rotating sub-structures that exhibit both positive and negative Poisson's ratio characteristics. A second type of rotating geometry, whose Poisson's ratio shifts from negative to positive as stretching increases, has also been identified. Based on kinematical studies we explore the relationship between the on-axis Poisson's ratios in terms of novel lattice geometry and the magnitude of deformation. Springer Science+Business Media, LLC, 2007 Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7690-7695 0022-2461 42:18<7690 2007 42 10853 https://doi.org/10.1007/s10853-007-1684-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1684-9 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Lim Teik-Cheng School of Science and Technology, SIM University (UniSIM), 535A Clementi Road, 599490, Singapore, Republic of Singapore aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7690-7695 0022-2461 42:18<7690 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer