Print Email Facebook Twitter Geometry-based control of instability patterns in cellular soft matter Title Geometry-based control of instability patterns in cellular soft matter Author Janbaz, S. Weinans, H. Zadpoor, A.A. Faculty Mechanical, Maritime and Materials Engineering Department Biomechanical Engineering Date 2016-02-09 Abstract Recent research has shown the potential of rationally designed geometrical features for controlling the functionality of advanced materials. Of particular recent interest has been the use of geometry for controlling the buckling behaviour of soft materials under compression. However, the effects of geometry may be mixed with those of the mechanical properties. In this paper, we present a specific class of 2D cellular soft matter for which the geometry, independent from the mechanical properties of the bulk material, activates the instability pathways of the material, thereby controlling the instability threshold and the instability mode (instability pattern). The geometrical parameters include those characterizing the shape of the voids and the porosity of the cellular solid. A critical strain that solely depends on the geometry controls the transition to instability. Depending on the above-mentioned geometrical parameters, the onset of instability is followed by either symmetric compaction or side buckling. We provide instability maps that relate the geometrical parameters to the critical strain and the instability mode of the presented cellular soft material. These open up the possibility of using geometry for programming the functionalities of materials. Subject Gold for Gold ยท Open Access To reference this document use: http://resolver.tudelft.nl/uuid:7b54bd2d-5f67-40e5-962d-e85d113950b8 DOI https://doi.org/10.1039/C6RA00295A Publisher RSC Publishing Source RSC Adv., 2016,6, 20431-20436 Part of collection Institutional Repository Document type journal article Rights (c) 2014 RSC Files PDF c6ra00295a.pdf 2.04 MB Close viewer /islandora/object/uuid:7b54bd2d-5f67-40e5-962d-e85d113950b8/datastream/OBJ/view