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Extreme stiffness tunability through the excitation of nonlinear defect modes

Serra-Garcia, M. and Lydon, J. and Daraio, C. (2016) Extreme stiffness tunability through the excitation of nonlinear defect modes. Physical Review E, 93 (1). Art. No. 010901(R). ISSN 2470-0045. http://resolver.caltech.edu/CaltechAUTHORS:20160204-151714588

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Abstract

The incremental stiffness characterizes the variation of a material's force response to a small deformation change. In lattices with noninteracting vibrational modes, the excitation of localized states does not have any effect on material properties, such as the incremental stiffness. We report that, in nonlinear lattices, driving a defect mode introduces changes in the static force-displacement relation of the material. By varying the defect excitation frequency and amplitude, the incremental stiffness can be tuned continuously to arbitrarily large positive or negative values. Furthermore, the defect excitation parameters also determine the displacement region at which the force-displacement relation is being tuned. We demonstrate this phenomenon experimentally in a compressed array of spheres tuning its incremental stiffness from a finite positive value to zero and continuously down to negative infinity.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevE.93.010901DOIArticle
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.93.010901PublisherArticle
http://journals.aps.org/pre/supplemental/10.1103/PhysRevE.93.010901PublisherSupplemental Material
http://arxiv.org/abs/1411.5242arXivDiscussion Paper
ORCID:
AuthorORCID
Daraio, C.0000-0001-5296-4440
Additional Information:©2016 American Physical Society. (Received 2 February 2015; revised manuscript received 7 December 2015; published 12 January 2016) We acknowledge support from the U.S.-AFOSR (Grant No. FA9550-12-1-0332) and the Army Research Office MURI U.S. ARO (Grant No. W911NF-09-1-0436).
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-12-1-0332
Army Research Office (ARO)W911NF-09-1-0436
Record Number:CaltechAUTHORS:20160204-151714588
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160204-151714588
Official Citation:Extreme stiffness tunability through the excitation of nonlinear defect modes M. Serra-Garcia, J. Lydon, and C. Daraio Phys. Rev. E 93, 010901(R) – Published 12 January 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64247
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:04 Feb 2016 23:33
Last Modified:16 Mar 2016 19:44

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