Roboticizing fabric by integrating functional fibers

Buckner, Trevor L.; Bilodeau, R. Adam; Kim, Sang Yup; Kramer‐Bottiglio, Rebecca

doi:10.1073/pnas.2006211117

Cited by 61 publications

(50 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Buckner et al. [ 168 ] integrated functional fibers into the fabric to create a metamaterial robot, which was able to freely change its shape like a transformer (Figure 8b ). Nitinol SMA wires were used as the bending actuators, and their flat ribbon section configuration avoided the uncontrollable and chaotic actions.…”

Section: Active Mechanical Metamaterials Responsive For Various Stimulus Fieldsmentioning

confidence: 99%

Section: Active Mechanical Metamaterials Responsive For Various Stimulus Fieldsmentioning

confidence: 99%

“…1) The applications in smart robots include crawling robots, [ 31 , 97 , 202 , 210 , 232 , 233 , 234 , 235 , 236 ] swimming robots, [ 237 , 238 , 239 ] smart grippers, [ 125 , 201 , 212 , 240 , 241 , 242 ] smart wearable systems. [ 27 , 52 , 168 , 243 ] 2) The applications in miniaturized systems include micro actuators, [ 166 , 197 , 244 , 245 , 246 , 247 , 248 , 249 ] soft pumps, [ 250 , 251 , 252 ] artificial muscles, [ 204 , 208 , 253 , 254 , 255 ] microfluidics, [ 28 , 99 , 256 ] super‐hydrophobic surfaces, [ 257 ] smart sensors and electronic components, [ 10 , 53 , ...…”

Section: Functions and Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

See 2 more Smart Citations

Recent Progress in Active Mechanical Metamaterials and Construction Principles

et al. 2021

View full text Add to dashboard Cite

Active mechanical metamaterials (AMMs) (or smart mechanical metamaterials) that combine the configurations of mechanical metamaterials and the active control of stimuli-responsive materials have been widely investigated in recent decades. The elaborate artificial microstructures of mechanical metamaterials and the stimulus response characteristics of smart materials both contribute to AMMs, making them achieve excellent properties beyond the conventional metamaterials. The micro and macro structures of the AMMs are designed based on structural construction principles such as, phase transition, strain mismatch, and mechanical instability. Considering the controllability and efficiency of the stimuli-responsive materials, physical fields such as, the temperature, chemicals, light, electric current, magnetic field, and pressure have been adopted as the external stimuli in practice. In this paper, the frontier works and the latest progress in AMMs from the aspects of the mechanics and materials are reviewed. The functions and engineering applications of the AMMs are also discussed. Finally, existing issues and future perspectives in this field are briefly described. This review is expected to provide the basis and inspiration for the follow-up research on AMMs.

show abstract

Section: Active Mechanical Metamaterials Responsive For Various Stimulus Fieldsmentioning

confidence: 99%

Section: Active Mechanical Metamaterials Responsive For Various Stimulus Fieldsmentioning

confidence: 99%

Section: Functions and Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Progress in Active Mechanical Metamaterials and Construction Principles

et al. 2021

View full text Add to dashboard Cite

show abstract

“…[ 11 ] Active properties, such as variable stiffness and shape recovery, can be embedded within the textile hierarchy through the inclusion of an active filament, such as a hydrogel or shape memory polymer (SMP) filament, [ 12–14 ] or active bimorph/composite filament. [ 15–18 ]…”

Section: Introductionmentioning

confidence: 99%

Kinetically Tunable, Active Auxetic, and Variable Recruitment Active Textiles from Hierarchical Assemblies

Granberry

Barry

Holschuh

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

Multifunctional textiles with programmable, multi‐axial, distributed, and scalable actuation are highly desirable and presently unrealized. 1D torque‐unbalanced active yarns within 2D textile structures are exploited to produce soft and scalable active textiles that exhibit tunable displacements, forces, stiffnesses, and kinematic deformations. Through a textile hierarchy spanning active material composition, yarn construction, textile geometry, and system architecture, these active textiles accomplish kinetic tunability, variable recruitment behaviors, and auxetic effects without mechanical contact, called active auxetic effects. New modes of pre‐programmed multi‐axial performance are enabled by geometrically manipulating—specifically pre‐stressing and constraining—active filaments in torsion and leveraging their structural elastic instability within a textile geometry. The new kinematic motion afforded by torque‐unbalanced active yarns enhances the performance of active textiles, which accomplish tensile strokes over 40%, generated blocked forces up to 308 N m−1, and specific work over 0.4. kJ kg−1. Advances in active textiles are demonstrated through multifunctional 3D applications, including a variable constriction pump that exhibits sequential actuation, a wearable that conforms multi‐axially around the body, and a soft exoskeleton that performs assistive motions and on‐body anchoring simultaneously. By harnessing the capabilities of active materials within a textile hierarchy, advances in the potentiality of multifunctional textiles are presented.

show abstract

“…Flexible filamentary structures have been handcrafted and employed by humans since prehistoric times for fastening, lifting, hunting, weaving, sailing, and climbing ( 1 ). The associated engineering of ropes and fabrics has evolved substantially ( 2 ), reflecting the need to predict and enhance their mechanical performance (e.g., flexibility, strength, and durability). Toward rationalizing the behavior of touching filaments, pioneering contributions on the mechanics of one-dimensional (1D) structures [e.g., the Euler elastica ( 3 , 4 ) and the Kirchhoff theory of rods ( 5 , 6 )] have been gradually augmented to describe more complex assemblies of filaments, including frictional elastica ( 7 ); plant tendrils ( 8 ); knitted ( 9 ) and woven ( 10 , 11 ) fabrics; gridshells ( 12 , 13 ); networks ( 14 ); filament and wire bundles ( 15 – 20 ); and knots (both loose and tight) ( 21 – 26 ).…”

mentioning

confidence: 99%

Mechanics of two filaments in tight orthogonal contact

Grandgeorge

Baek

Singh

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Networks of flexible filaments often involve regions of tight contact. Predictively understanding the equilibrium configurations of these systems is challenging due to intricate couplings between topology, geometry, large nonlinear deformations, and friction. Here, we perform an in-depth study of a simple, yet canonical, problem that captures the essence of contact between filaments. In the orthogonal clasp, two filaments are brought into contact, with each centerline lying in one of a pair of orthogonal planes. Our data from X-ray tomography (μCT) and mechanical testing experiments are in excellent agreement with finite element method (FEM) simulations. Despite the apparent simplicity of the physical system, the data exhibit strikingly unintuitive behavior, even when the contact is frictionless. Specifically, we observe a curvilinear diamond-shaped ridge in the contact-pressure field between the two filaments, sometimes with an inner gap. When a relative displacement is imposed between the filaments, friction is activated, and a highly asymmetric pressure field develops. These findings contrast to the classic capstan analysis of a single filament wrapped around a rigid body. Both the μCT and FEM data indicate that the cross-sections of the filaments can deform significantly. Nonetheless, an idealized geometrical theory assuming undeformable tube cross-sections and neglecting elasticity rationalizes our observations qualitatively and highlights the central role of the small, but nonzero, tube radius of the filaments. We believe that our orthogonal clasp analysis provides a building block for future modeling efforts in frictional contact mechanics of more complex filamentary structures.

show abstract

Roboticizing fabric by integrating functional fibers

Cited by 61 publications

References 49 publications

Recent Progress in Active Mechanical Metamaterials and Construction Principles

Recent Progress in Active Mechanical Metamaterials and Construction Principles

Kinetically Tunable, Active Auxetic, and Variable Recruitment Active Textiles from Hierarchical Assemblies

Mechanics of two filaments in tight orthogonal contact

Contact Info

Product

Resources

About