Compliant rolling-contact architected materials for shape reconfigurability

Shaw, Lucas A.; Chizari, Samira; Dotson, Matthew; Song, Yuanping; Hopkins, Jonathan B.

doi:10.1038/s41467-018-07073-5

Cited by 31 publications

(9 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aiming at solving these problems, we explore the design idea from compliant mechanism, [ 10 ] which realizes its function by harnessing deformation of flexible elastic elements. More recently, of particular interest in this research field is designing compliant metamaterials to achieve programmable features of shape reconfiguration, [ 11–14 ] mechanical stiffness, [ 15–20 ] information encryption, [ 21–24 ] energy absorbing, [ 25–28 ] wave guiding, [ 29–32 ] bandgap, [ 33–35 ] solitons, [ 36 ] etc., motivating possible way for novel QZS isolator. Here, we suggest and realize a class of tailored mechanical metamaterials containing many optimally designed curved beams; these beams are tailored in shape to achieve prescribed QZS characteristics, enabling the whole mechanical metamaterial to achieve programmable QZS features.…”

Section: Introductionmentioning

confidence: 99%

Tailored Mechanical Metamaterials with Programmable Quasi‐Zero‐Stiffness Features for Full‐Band Vibration Isolation

Zhang

Guo

2021

Adv Funct Materials

View full text Add to dashboard Cite

Quasi‐zero‐stiffness (QZS) isolators of high‐static‐low‐dynamic stiffness play an important role in ultra‐low frequency vibration mitigation. While the current designs of QZS mainly exploit the combination of negative‐stiffness corrector and positive‐stiffness element, and only have a single QZS working range, here a class of tailored mechanical metamaterials with programmable QZS features is proposed. These programmed structures contain curved beams with geometries that are specifically designed to enable the prescribed QZS characteristics. When these metamaterials are compressed, the curved beams reach the prescribed QZS working range in sequence, thus enabling tailored stair‐stepping force‐displacement curves with multiple QZS working ranges. Compression tests demonstrate that a vast design space is achieved to program the QZS features of the metamaterials. Further vibration tests confirm the ultra‐low frequency vibration isolation capability of the proposed mechanical metamaterials. The mechanism of QZS stems solely from the structural geometry of the curved beams and is therefore materials‐independent. This design strategy opens a new avenue for innovating compact and scalable QZS isolators with multiple working ranges.

show abstract

Section: Introductionmentioning

confidence: 99%

Tailored Mechanical Metamaterials with Programmable Quasi‐Zero‐Stiffness Features for Full‐Band Vibration Isolation

Zhang

Guo

2021

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…[105][106][107][108][109] Mechanical metamaterials based on the characteristics of traditional mechanical transmission structures possess typical mechanical intelligence characteristics, which can realize continuous self-regulation of stiffness in a large range and expand the shape morphing capacity between ultrasoft and solid states. [110][111][112] Programmable multistable mechanical metamaterials with mechanical intelligence ideology can be used in mechanical ternary logic gates, [113] amplitude modulators, [114] and mechanical memory. [115] Compared with traditional electrical devices, these mechanical devices show advantages in energy saving and resistance to corrosion in a harsh environment.…”

Section: Design Methodologymentioning

confidence: 99%

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Zhao

Zou

Wei

et al. 2023

Advanced Energy Materials

View full text Add to dashboard Cite

The Artificial Intelligence of Things (AIoT) connects everything with intelligence, while the increase in energy consumption generated by numerous electronic devices puts forward an impending demand on the power supply. Energy harvesting technology has emerged as a compelling innovation technology for the net zero emissions of the power supply for the AIoT. Although significant advances have been witnessed in energy harvesting, some issues such as poor electrical output, weak environmental adaptability, and low reliability are difficult to satisfactorily resolve. Mechanical intelligent energy harvesting can be defined as the system identifying the external excitation or its own state and reacting to it, rather than relying on electrical sensing elements or a central controller for certain adaptive or programmed functions. The adaptive and programmed functions exhibit great potential in solving the above‐mentioned issues that seriously restrict the development of the energy harvesting technology. Here, a generalized definition of mechanical intelligent energy harvesting is given critically and the design methodology is elaborated. The typical reported energy harvesting systems with the characteristics of mechanical intelligence are reviewed. The key research directions in mechanical intelligent energy harvesting are discussed. The mechanical intelligence is expected to revolutionize the development of the energy‐harvesting technology and pave the way for applications.

show abstract

“…Although individual examples of reconfigurable structures are being routinely reported, more general design approaches and structure-searching algorithms are needed to eventually solve the inverse problem of encoding the desired reconfiguration in tailor-made architectures. For example, modular systems combine versatile building blocks — such as compliant rolling-contact joints 51 or bi-stable triangular hinges 25 (Fig. 1g ) — into networks that prescribe multiple degrees of freedom in 2D and 3D structural transformation.…”

Section: Responsive Mechanisms Of Architected Materialsmentioning

confidence: 99%

Responsive materials architected in space and time

2022

View full text Add to dashboard Cite

Rationally designed architected materials have attained previously untapped territories in materials property space. The properties and behaviours of architected materials need not be stagnant after fabrication; they can be encoded with a temporal degree of freedom such that they evolve over time. In this Review, we describe the variety of materials architected in both space and time, and their responses to various stimuli, including mechanical actuation, changes in temperature and chemical environment, and variations in electromagnetic fields. We highlight the additive manufacturing methods that can precisely prescribe complex geometries and local inhomogeneities to make such responsiveness possible. We discuss the emergent physics phenomena observed in architected materials that are analogous to those in classical materials, such as the formation and behaviour of defects, phase transformations and topologically protected properties. Finally, we offer a perspective on the future of architected materials that have a degree of intelligence through mechanical logic and artificial neural networks.

show abstract

Compliant rolling-contact architected materials for shape reconfigurability

Cited by 31 publications

References 35 publications

Tailored Mechanical Metamaterials with Programmable Quasi‐Zero‐Stiffness Features for Full‐Band Vibration Isolation

Tailored Mechanical Metamaterials with Programmable Quasi‐Zero‐Stiffness Features for Full‐Band Vibration Isolation

Mechanical Intelligent Energy Harvesting: From Methodology to Applications

Responsive materials architected in space and time

Contact Info

Product

Resources

About