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Control Number311936
Date and Time of Latest Transaction20150706093044.AM
General Information150706s |||||||||b ||00|||
Cataloging SourceSTII-DOST
Local Call NumberScienceDirect
Main Entry - Personal NameFleck, N.A.
 Deshpande, V.S.
 Danas, K.
Title StatementCompliant interfaces A mechanism for relaxation of dislocation pile-ups in a sheared single crystal by K. Danas, V.S. Deshpande and N.A. Fleck
Physical Descriptionpages 1792-1805 computer file; text; 1,834kb
Summary, Etc.Discrete dislocation plasticity models and strain-gradient plasticity theories are used to investigate the role of interfaces in the elastic–plastic response of a sheared single crystal. The upper and lower faces of a single crystal are bonded to rigid adherends via interfaces of finite thickness. The sandwich system is subjected to simple shear, and the effect of thickness of crystal layer and of interfaces upon the overall response are explored. When the interface has a modulus less than that of the bulk material, both the predicted plastic size effect and the Bauschinger effect are considerably reduced. This is due to the relaxation of the dislocation stress field by the relatively compliant surface layer. On the other hand, when the interface has a modulus equal to that of the bulk material a strong size effect in hardening as well as a significant reverse plasticity are observed in small specimens. These effects are attributed to the energy stored in the elastic fields of the geometrically necessary dislocations (GNDs).04
Subject Added Entry - Topical TermEngineering04
 Strain-gradient plasticity04
 Crystal plasticity04
 Discrete dislocations
LocationDOST STII ScienceDirect NONPRINTS NP 14-15795 1 14-15795 Online/Download 2012-01-19
  
     
 
Physical Location
Department of Science and Technology
Science and Technology Information InstituteScienceDirect
  
     
 
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