Document Detail


Onset of sliding in amorphous films triggered by high-frequency oscillatory shear.
MedLine Citation:
PMID:  25165969     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We investigate the change of the static friction threshold of weakly adhesive amorphous interfaces in the presence of the shear ultrasonic oscillation. Prior to sliding, a softening of the shear interfacial stiffness is observed under either static or high-amplitude oscillatory shear. We find that the nonlinear shear ultrasound, regardless of its polarization, triggers the macroscopic sliding at these interfaces far below the static threshold. Such unjamming transition is due to the vibration-induced decrease of the apparent coefficient of static friction, which provides a mechanism for understanding the reduction of the yielding threshold of granular media by the acoustic fluidization.
Authors:
J Léopoldès; G Conrad; X Jia
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Publication Detail:
Type:  Journal Article     Date:  2013-06-11
Journal Detail:
Title:  Physical review letters     Volume:  110     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2013 Jun 
Date Detail:
Created Date:  2014-08-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  248301     Citation Subset:  IM    
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