485 citations · 5.2k across the 72 of their papers we have counts for
14 papers · 1 filter
Single-test evaluation of directional elastic properties of anisotropic structured materials
Jagannadh Boddapati, Moritz Flaschel, Siddhant Kumar +2
When the elastic properties of structured materials become direction-dependent, the number of their descriptors increases. For example, in two-dimensions, the anisotropic behavior…
Effective continuum models for the buckling of non-periodic architected sheets that display quasi-mechanism behaviors
Connor McMahan, Andrew Akerson, Paolo Celli +2
In this work, we construct an effective continuum model for architected sheets that are composed of bulky tiles connected by slender elastic joints. Due to their mesostructure, the…
Prestrain-induced bandgap tuning in 3D-printed tensegrity-inspired lattice structures
Kirsti Pajunen, Paolo Celli, Chiara Daraio
In this letter, we provide experimental evidence of bandgap tunability with global prestrain in additively-manufactured tensegrity-inspired lattice structures. These lattices are e…
Compliant morphing structures from twisted bulk metallic glass ribbons
Paolo Celli, Alice Lamaro, Connor McMahan +3
In this work, we investigate the use of pre-twisted metallic ribbons as building blocks for shape-changing structures. We manufacture these elements by twisting initially flat ribb…
Designing Perturbative Metamaterials from Discrete Models: From Veselago lenses to topological insulators
Kathryn H. Matlack, Marc Serra-Garcia, Antonio Palermo +2
Discrete models provide concise descriptions of complex physical phenomena, such as negative refraction, topological insulators, and Anderson localization. While there are multiple…
Composite 3D-printed meta-structures for low frequency and broadband vibration absorption
Kathryn H. Matlack, Anton Bauhofer, Sebastian Krödel +2
Architected materials that control elastic wave propagation are essential in vibration mitigation and sound attenuation. Phononic crystals and acoustic metamaterials use band gap e…
Extraordinary stiffness tunability through thermal expansion of nonlinear defect modes
Marc Serra-Garcia, Joseph Lydon, Chiara Daraio
Incremental stiffness characterizes the variation of a material's force response to a small deformation change. Typically materials have an incremental stiffness that is fixed and…
Locally Resonant Granular Chain
Luca Bonanomi, Georgios Theocharis, Chiara Daraio
We report the design and testing of a tunable and nonlinear mechanical metamaterial, called locally resonant granular chain. It consists of a one-dimensional array of hollow spheri…
Mesoscopic approach to granular crystal dynamics
Marcial Gonzalez, Jinkyu Yang, Chiara Daraio +1
We present a mesoscopic approach to granular crystal dynamics, which comprises a three-dimensional finite-element model and a one-dimensional regularized contact model. The approac…
Interaction of highly nonlinear solitary waves with linear elastic media
Jinkyu Yang, Claudio Silvestro, Devvrath Khatri +2
We study the interaction of highly nonlinear solitary waves in granular crystals, with an adjacent linear elastic medium. We investigate the effects of interface dynamics on the re…
Carbon nanotube-sharp tips and carbon nanotube-soldering irons
A. Misra, C. Daraio
We report on the nano-electron beam assisted fabrication of atomically sharp iron-based tips and on the creation of a nano-soldering iron for nano-interconnects using Fe-filled mul…
Strain rate effects in the mechanical response of polymer anchored carbon nanotube foams
A. Misra, J. R. Greer, C. Daraio
Super-compressible foam-like carbon nanotube films have been reported to exhibit highly nonlinear viscoelastic behaviour in compression similar to soft tissue. Their unique combina…
Optimal design of composite granular protectors
Fernando Fraternali, Mason A. Porter, Chiara Daraio
We employ an evolutionary algorithm to investigate the optimal design of composite protectors using one-dimensional granular chains composed of beads of various sizes, masses, and…
Tunability of solitary wave properties in one dimensional strongly nonlinear phononic crystals
C. Daraio, V. F. Nesterenko, E. B. Herbold +1
One dimentional strongly nonlinear phononic crystals were assembled from chains of PTFE (polytetrafluoroethylene) and stainless steel spheres with gauges installed inside the beads…