Nonlinear dynamics of an origami wheel with shape memory alloy actuators

被引：27

作者：

Fonseca, Larissa M. ^{[1
]}

Rodrigues, Guilherme V. ^{[1
]}

Savi, Marcelo A. ^{[1
]}

Paiva, Alberto ^{[2
]}

机构：

[1] Univ Fed Rio de Janeiro, Dept Mech Engn, COPPE, Ctr Nonlinear Mech, POB 68-503, BR-21941972 Rio De Janeiro, RJ, Brazil

[2] Univ Fed Fluminense, Dept Mech Engn, BR-27255250 Volta Redonda, RJ, Brazil

来源：

CHAOS SOLITONS & FRACTALS | 2019年 / 122卷

关键词：

Origami; Shape memory alloys; Self-expandable structures; Nonlinear dynamics; Chaos;

D O I：

10.1016/j.chaos.2019.03.033

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Origami generates three-dimensional structures from two-dimensional sources and is inspiring engineers to design systems related to different applications as robotics, biomedical and aerospace engineering. The use of smart materials increases the range of applicability of origami systems exploiting adaptive behavior. In this regard, shape memory alloy (SMA) actuators are being used to promote geometrical changes in origami structures. This paper deals with the nonlinear dynamics of an origami wheel with SMA actuators. The origami wheel has strong geometric and constitutive nonlinearities presenting a complex dynamical response. Symmetry assumptions related to waterbomb folding pattern allow one to develop a single degree of freedom reduced-order model system that describes origami dynamics. Based on that, numerical simulations are carried out representing different operational conditions presenting a general comprehension of the origami dynamical response. Origami complex behavior is of concern showing chaotic motions and strong parameter sensitivity. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：245 / 261

页数：17

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