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Bibliographic Data
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311936
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20150706093044.AM
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150706s |||||||||b ||00|||
040
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$aSTII-DOST
090
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$aScienceDirect
100
1#
$a Fleck, N.A.
100
1#
$aDeshpande, V.S.
100
1#
$aDanas, K.
245
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$aCompliant interfaces$bA mechanism for relaxation of dislocation pile-ups in a sheared single crystal$cby K. Danas, V.S. Deshpande and N.A. Fleck
260
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$aAmsterdam$bElsevier Ltd.$c2010
300
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$apages 1792-1805$bcomputer file; text; 1,834kb
504
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$aIncludes bibliographical references
520
3#
$aDiscrete dislocation plasticity models and strain-gradient plasticity theories are used to investigate the role of interfaces in the elastic–plastic response of a sheared single crystal. The upper and lower faces of a single crystal are bonded to rigid adherends via interfaces of finite thickness. The sandwich system is subjected to simple shear, and the effect of thickness of crystal layer and of interfaces upon the overall response are explored. When the interface has a modulus less than that of the bulk material, both the predicted plastic size effect and the Bauschinger effect are considerably reduced. This is due to the relaxation of the dislocation stress field by the relatively compliant surface layer. On the other hand, when the interface has a modulus equal to that of the bulk material a strong size effect in hardening as well as a significant reverse plasticity are observed in small specimens. These effects are attributed to the energy stored in the elastic fields of the geometrically necessary dislocations (GNDs).04
650
a
Engineering04
650
a
Strain-gradient plasticity04
650
a
Crystal plasticity04
650
a
Discrete dislocations
852
a
DOST$bSTII$hScienceDirect$jNONPRINTS$kNP$p14-15795$t1$x14-15795$yOnline/Download$12012-01-19
991
w
NONPRINTS
  
     
 
Physical Location
Department of Science and Technology
Science and Technology Information InstituteScienceDirect
  
     
 
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