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Highly nonlinear contact interaction and dynamic energy dissipation by forest of carbon nanotubes

Daraio, Chiara and Nesterenko, Vitali F. and Jin, Sungho (2004) Highly nonlinear contact interaction and dynamic energy dissipation by forest of carbon nanotubes. Applied Physics Letters, 85 (23). pp. 5724-5726. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:DARapl04

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Abstract

Mechanical response and energy dissipation of an array of carbon nanotubes under high-strain rate deformation was studied using a simple drop-ball test with the measurement of the dynamic force between the ball and forest of nanotubes. This convenient process allows extracting force–displacement curves and evaluating dissipated energy by the nanotubes. The contact force exhibits a strongly nonlinear dependence on displacement being fundamentally different than the Hertz law. The forest of vertically aligned nanotubes may be used as a strongly nonlinear spring in discrete systems for monitoring signal propagation speed, and as a microstructure for localized energy absorption.


Item Type:Article
Additional Information:©2004 American Institute of Physics (Received 2 August 2004; accepted 6 October 2004) This work was supported by the NSF (Grant No. DCMS03013220). The authors wish to thank Dr. L. H. Chen and J. AuBuchon at UC San Diego for help.
Subject Keywords:carbon nanotubes; internal stresses; impact testing; elastic deformation; elasticity
Record Number:CaltechAUTHORS:DARapl04
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:DARapl04
Alternative URL:http://dx.doi.org/10.1063/1.1829778
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5094
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:28 Sep 2006
Last Modified:26 Dec 2012 09:03

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