(Dynamics and Controls)
Symposium Organizers:
K. Bertoldi, Harvard University
bertoldi@seas.harvard.edu
S. Gonella, University of Minnesota
sgonella@umn.edu
Symposium Technical Description
Mechanical metamaterials have attracted great interest in recent years because of their unique mechanical properties that exceed those displayed by conventional materials. Some of the most exciting opportunities for metamaterials research are found in the arena of wave propagation, thanks to the ability of metamaterials to induce significant spectral and spatiotemporal manipulation of acoustic and elastic waves. Phononic bandgaps, frequency-dependent directivity, anomalous refractive behavior and subwavelength waveguiding are just some of the most well-known wave manipulation effects. These properties make metamaterials ideal for a variety of engineering applications, including mechanical filtering, energy deflection and trapping and the implementation of a variety of structural logic architectures.
Recently, researchers have focused their attention on metamaterial architectures exhibiting nonlinear behavior. Nonlinearity has been exploited to make acoustic diodes and induce other symmetry breaking effects, as well as a mechanism to achieve tunability and adaptivity and to design programmable structural materials. The field of metamaterials is now rapidly stretching its potential by fully incorporating the latest advances on soft materials, origami-inspired foldable structures and coupled physics phenomena.
In this symposium we welcome contributions that discuss the latest results in acousto-elastic metamaterials research, with special emphasis on works that explore the intimate connection between physics and mechanics. We particularly encourage contributions that discuss metamaterial architectures based on nontrivial material platforms, including granular media, soft lattices, chiral topologies and bucklable and foldable cellular structures.
Technical Program
Monday | M1 10:00am-11:40am
| F3-1: Advanced Nano-Manufacturing for Multi-functional Nanosystems | ||
| Room 2108 | Session Chair: K. Bertoldi, S. Gonella |
Track F: Dynamics and Controls |
| 10:00 am | Harnessing dynamic buckling in soft elastic metamaterials to manage nonlinearity in the propagation, reflection and absorption of elastic waves
Vincent Tournat, Xinxin Guo, Bolei Deng, Jordan Raney, Vitalyi Gusev, Katia Bertoldi |
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| 10:20 am | Harnessing geometric and magnetic nonlinearities for acoustic switching and logic
Osama R. Bilal, André G.C. Foehr, Chiara Daraio |
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| 10:40 am | Wave phenomena in microscale granular crystals
Nicholas Boechler |
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| 11:00 am | Linear and Nonlinear dynamic response of a liquid solid composite
Ahmed Elbanna, Qianli Chen |
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| 11:20 am | Adaptively Enhanced Directivity in Nonlinear Lattice Materials
Ganesh Ramakrishnan, Stefano Gonella |
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Monday | M2 13:00pm-14:40pm
| F3-2: Advanced Nano-Manufacturing for Multi-functional Nanosystems | ||
| Room 2108 | Session Chair: K. Bertoldi, S. Gonella |
Track F: Dynamics and Controls |
| 13:00 pm | Unidirectional strongly nonlinear transition waves in bistable lattices
Neel Nadkarni, Andres Felipe Arrieta, Christopher Chong, Dennis M. Kochmann, Chiara Daraio |
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| 13:20 pm | Sonic waves and propagating phase boundaries in bi-stable chains with stretch and twist
Prashant Kishore Purohit, Qingze Zhao |
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| 13:40 pm | Wave control through soft microstructural curling: Bandgap shifting, reconfigurable anisotropy and switchable chirality
Paolo Celli, Stefano Gonella |
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| 14:00 pm | Elastic wave propagation in soft microstructured materials undergoing finite strains
Stephan Rudykh, Pavel Galich |
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| 14:20 pm | Band gap transmission in periodic, bistable mechanical lattices
Michael Joseph Frazier, Dennis Kochmann |
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Monday | M3 15:00pm-16:40pm
| F3-3: Advanced Nano-Manufacturing for Multi-functional Nanosystems | ||
| Room 2108 | Session Chair: K. Bertoldi, S. Gonella |
Track F: Dynamics and Controls |
| 15:00 pm | Helical edge states and topological phase transitions in phononic systems using bi-layered lattices
Raj Kumar Pal |
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| 15:20 pm | Auxetic elastic meta-structures for vibration absorption
Kathryn H Matlack, André Kissling, Antonio Palermo, Chiara Daraio |
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| 15:40 pm | Linear operators for spectral analysis and design
Rose Weisburgh, Peter W. Chung |
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| 16:00 pm | Metamaterial properties of periodic laminates
Ankit Srivastava |
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