Smart helical structures inspired by the pellicle of euglenids
Visualitza/Obre
Cita com:
hdl:2117/129386
Tipus de documentArticle
Data publicació2019-02
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
ProjecteEpiMech - Epithelial cell sheets as engineering materials: mechanics, resilience and malleability (EC-H2020-681434)
EpiMech - Epithelial cell sheets as engineering materials: mechanics, resilience and malleability (EC-H2020-681434)
MICROMOTILITY - Multiscale modeling and simulation of biological and artificial locomotion at the micron scale: from metastatic tumor cells and unicellular swimmers to bioinspired microrobots (EC-FP7-340685)
EpiMech - Epithelial cell sheets as engineering materials: mechanics, resilience and malleability (EC-H2020-681434)
MICROMOTILITY - Multiscale modeling and simulation of biological and artificial locomotion at the micron scale: from metastatic tumor cells and unicellular swimmers to bioinspired microrobots (EC-FP7-340685)
Abstract
This paper deals with a concept for a reconfigurable structure bio-inspired by the cell wall architecture of euglenids, a family of unicellular protists, and based on the relative sliding of adjacent strips. Uniform sliding turns a cylinder resulting from the assembly of straight and parallel strips into a cylinder of smaller height and larger radius, in which the strips are deformed into a family of parallel helices. We examine the mechanics of this cylindrical assembly, in which the interlocking strips are allowed to slide freely at their junctions, and compute the external forces (axial force and axial torque at the two ends, or pressure on the lateral surface) necessary to drive and control the shape changes of the composite structure. Despite the simplicity of the structure, we find a remarkably complex mechanical behaviour that can be tuned by the spontaneous curvature or twist of the strips.
CitacióNoselli, G.; Arroyo, M.; DeSimone, A. Smart helical structures inspired by the pellicle of euglenids. "Journal of the mechanics and physics of solids", Febrer 2019, vol. 123, p. 234-246.
ISSN0022-5096
Versió de l'editorhttps://www.sciencedirect.com/science/article/pii/S0022509618308317
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