Superelastic tensegrities: matrix formulation and antagonistic actuation

0507201 - FZÚ 2020 RIV GB eng J - Journal Article
Micheletti, A. - dos Santos, F.A. - Šittner, Petr
Superelastic tensegrities: matrix formulation and antagonistic actuation.
Smart Materials and Structures. Roč. 27, č. 10 (2018), s. 1-29, č. článku 105028. ISSN 0964-1726. E-ISSN 1361-665X
R&D Projects: GA MŠMT(CZ) LM2015088; GA ČR GA16-20264S; GA ČR GA18-03834S
Institutional support: RVO:68378271
Keywords : tensegrity systems * shape-memory alloys * superelastic behavior * antagonistic actuation * matrix equations
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.543, year: 2018
Method of publishing: Limited access
https://doi.org/10.1088/1361-665x/aadaa5

Superelastic tensegrity systems are prestressed structures composed by bars and cables in which some cables are realized with superelastic shape-memory alloys. These systems combine the peculiar features of tensegrity structures with those of shape-memory alloys and are particularly suitable for adaptive and variable-geometry systems. The main goal of this work is the design of systems with antagonistic actuation, that is to say, systems where two sets of superelastic cables can be actuated against each other in a reversible way. Superelasticity is here exploited to improve the stability of systems withstanding external loads. We show that the evolution of superelastic tensegrities, subjected to load and temperature changes, is described by a system of ordinary differential equations written in matrix form, a system that we solve by standard numerical routines.
Permanent Link: http://hdl.handle.net/11104/0298251