Year: 2022
Type: article
Abstract: While memory effects emerge from systems of wildly varying lengthscales and timescales, the reduction of a complex system with many interacting elements into one simple enough to be understood without also losing the complex behavior continues to be a challenge.Here, we investigate how bistable cylindrical origamis provide such a reduction via tunably interactive memory behaviors.We base our investigation on folded sheets of Kresling patterns that function as two-state memory units.By linking several units, each with a selected activation energy, we construct a one-dimensional material that exhibits return-point memory.After a comprehensive experimental analysis of the relation between the geometry of the pattern and the mechanical response for a single bit, we study the memory of a bellows composed of four bits arranged in series.Since these bits are decoupled, the system reduces to the Preisach model, and we can drive the bellows to any of its 16 allowable states by following a prescribed sequence of compression and extension.We show how to reasonably discriminate between states by measuring the system's total height and stiffness near equilibrium.Furthermore, we establish the existence of geometrically disallowed defective stable configurations that expand the configuration space to 64 states with a more complex transition pattern.Using empirical considerations of the mechanics, we analyze the hierarchical structure of the corresponding diagram, which includes Garden of Eden states and subgraphs.We highlight two irreversible transformations, namely shifting and erasure of defects, leading to memory behaviors reminiscent of those observed with more complex glassy systems.
Source: Physical Review Research
Institutions: Centre National de la Recherche Scientifique, Tel Aviv University, Université Paris Sciences et Lettres, École Normale Supérieure - PSL, Sorbonne Université, Laboratoire de Physique de l'Ecole Normale Supérieure, Université Paris Diderot, Indiana University Bloomington, Indiana University, North Carolina State University, University of Bonn
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Awards: EXC 2047: Hausdorff Center for Mathematics (HCM), G1633018821, G1871477277, Metastabile Übergänge in zeitabhängigen, getriebenen ungeordneten Systemen: Von deformierbaren Strukturen in stochastischen Umgebungen zu adaptiven Pfaden in stochastischen Fitnesslandschaften, G3112948292, G3952119415, G4093683979, G4507395437, SFB 1060: Die Mathematik der emergenten Effekte, Kavli Institute for Theoretical Physics, G8847963564
OpenAlex ID: W3209119022