Considering Mechanical Advantage in the Design and Actuation of an Origami-Based Mechanism

Wilcox, Eric W.; Shrager, Adam C.; Bowen, Landen; Frecker, Mary; Lockette, Paris von; Simpson, Timothy W.; Magleby, Spencer P.; Lang, Robert J.; Howell, Larry L.

doi:10.1115/detc2015-47708

Cited by 11 publications

(7 citation statements)

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“…The concept of origami folding has been drawing intense interest and has inspired novel applications in many different fields, such as biomedical devices, (Hanks et al, 2016, 2017; Mousavi-Khattat et al, 2015), deformable solar cells (Tang et al, 2014; Zirbel et al, 2013), robotics (Cheng et al, 2017; Mu et al, 2015; Onal et al, 2015), stackable paper batteries (Lee and Choi, 2015), and adaptive manufacturing (Yuan et al, 2017). A number of research studies have focused on applications of self-folding structures (Bani-Hani and Karami, 2015; Del Grosso and Basso, 2010; Neville et al, 2017; Silverberg et al, 2015; Wilcox et al, 2015; Yan et al, 2016), where multiple mechanisms are applied to actuate active folding structures, among which are light-responsive polymers (Liu et al, 2012; Ryu et al, 2012), electroactive polymers (EAPs) (Ahmed and Ounaies, 2016a; Ahmed et al, 2015), magnetoactive elastomers (MAEs) (Bowen et al, 2015, 2016, 2017; Crivaro et al, 2016), and shape memory materials (Firouzeh et al, 2017; Hernandez et al, 2017; Zhakypov et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of electroactive and magnetoactive coupled behaviors in multi-field origami structures

Wei

Ahmed

Masters

et al. 2018

Journal of Intelligent Material Systems and Structures

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Active origami-inspired designs, which incorporate active materials such as electroactive polymers and magnetoactive elastomers into self-folding structures, have shown good promise in engineering applications. In this article, finite element analysis models are developed for several bending and folding configurations that incorporate a combination of active and passive material layers, such as electroactive polymer-actuated unimorph benders based on single and multilayer electroactive polymers, electroactive polymer-actuated notched unimorph folding configurations, and a multi-field actuated bimorph configuration. Constitutive relations are developed for both electrostrictive and magnetoactive materials to model the coupled behaviors explicitly. Shell elements are adopted for their capacity of modeling thin films, relatively low computational cost, and ability to model the intrinsic coupled behaviors in the active materials under consideration. The electrostrictive coefficients are measured and then used as input in the constitutive modeling of the coupled behavior. The magnetization of the magnetoactive elastomer is measured and then used to calculate the magnetic torque as a function of the special orientation, which leads to spatial deformation of the magnetoactive elastomers. The objective of the study is to validate the constitutive models implemented through the finite element analysis method to simulate multi-field coupled behaviors of the active origami configurations. Through quantitative comparisons, simulation results show good agreement with experimental data. By investigating the impact of material selection, location, and geometric parameters, this finite element analysis approach can be used in design of self-folding structures, reducing trial-and-error iterations in experiments.

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Section: Introductionmentioning

confidence: 99%

Finite element analysis of electroactive and magnetoactive coupled behaviors in multi-field origami structures

Wei

Ahmed

Masters

et al. 2018

Journal of Intelligent Material Systems and Structures

Self Cite

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“…Many of these design considerations are highly coupled, such as accommodating for thickness and rigidity, thus requiring iteration to find the desired result. Researchers have developed numerous tools to help facilitate designs requiring rigid-foldability [24,25], thickness [2,26], hinge selection [27], actuation methods [28][29][30][31], and manufacturing methods [1,17].…”

Section: Origami-basedmentioning

confidence: 99%

An Approach to Designing Origami-Adapted Aerospace Mechanisms

Morgan

Magleby

Howell

2016

Journal of Mechanical Design

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152

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An approach to designing products based on adapting patterns and behaviors from origami is presented. The approach is illustrated by showing its capability for developing mechanism applications for aerospace-based systems. Origami has several attributes that are sought after in aerospace designs, such as deployability, stowability, and portability. The origami-adapted design process seeks to facilitate designers in reliably adapting origami into useful products that achieve desirable attributes. The origamiadapted design process is illustrated and tested using three examples of preliminary design: an origami bellows to protect the drill shafts of a Mars Rover, an expandable habitat for the International Space Station, and a deployable parabolic antenna for space and earth communication systems. Each of these examples starts with an origami fold pattern and modifies it to fulfill specific needs for an aerospace-based product.

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“…Coefficient of electrostriction of the ith layer model was created in ADAMS, a commercial multibody dynamics software package (see Fig. 16) 3 . Following the steps of dynamic model development found in Ref.…”

Section: Imentioning

confidence: 99%

“…Self-folding origami has been the subject of considerable research recently, resulting in many novel applications and actuation approaches [1][2][3]. In most cases, a single active material is used to actuate a model with bending or folding that can be permanent [4,5] or reversible [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Design, Fabrication, and Modeling of an Electric–Magnetic Self-Folding Sheet

Bowen

Springsteen

Ahmed

et al. 2017

Journal of Mechanisms and Robotics

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A concept recently proposed by the authors is that of a multifield sheet that folds into several distinct shapes based on the applied field, be it magnetic, electric, or thermal. In this paper, the design, fabrication, and modeling of a multifield bifold are presented, which utilize magneto-active elastomer (MAE) to fold along one axis and an electro-active polymer, P(VDF-TrFE-CTFE) terpolymer, to fold along the other axis. In prior work, a dynamic model of self-folding origami was developed, which approximated origami creases as revolute joints with torsional spring–dampers and simulated the effect of magneto-active materials on origami-inspired designs. In this work, the crease stiffness and MAE models are discussed in further detail, and the dynamic model is extended to include the effect of electro-active polymers (EAP). The accuracy of this approximation is validated using experimental data from a terpolymer-actuated origami design. After adjusting crease stiffness within the dynamic model, it shows good correlation with experimental data, indicating that the developed EAP approximation is accurate. With the capabilities of the dynamic model improved by the EAP approximation method, the multifield bifold can be fully modeled. The developed model is compared to the experimental data obtained from a fabricated multifield bifold and is found to accurately predict the experimental fold angles. This validation of the crease stiffness, MAE, and EAP models allows for more complicated multifield applications to be designed with confidence in their simulated performance.

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Considering Mechanical Advantage in the Design and Actuation of an Origami-Based Mechanism

Cited by 11 publications

References 0 publications

Finite element analysis of electroactive and magnetoactive coupled behaviors in multi-field origami structures

Finite element analysis of electroactive and magnetoactive coupled behaviors in multi-field origami structures

An Approach to Designing Origami-Adapted Aerospace Mechanisms

Design, Fabrication, and Modeling of an Electric–Magnetic Self-Folding Sheet

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