Abstract
To model size dependent plastic deformation at micron and submicron length scales the theory of mechanism-based strain gradient plasticity (MSG) was developed. The MSG approach incorporates the concept of geometrically necessary dislocations into continuum plastic constitutive laws via Taylor hardening relation. This concept is extended here to develop a mechanism-based strain gradient theory for crystal plasticity (MSG-CP) based on the notions of dislocation density tensor and resolved density force corresponding to the Peach-Koehler force in dislocation theory. An effective density of geometrically necessary dislocations is defined on the basis of resolved density force for specific slip systems and is incorporated into the plastic constitutive laws via Taylor relation.
| Original language | English (US) |
|---|---|
| Article number | P6.1 |
| Pages (from-to) | 301-306 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium Proceedings |
| Volume | 821 |
| State | Published - Dec 1 2004 |
| Event | Nanoscale Materials and Modeling - Relations Among Processing, Microstructure and Mechanical Properties - San Francisco, CA, United States Duration: Apr 13 2004 → Apr 16 2004 |
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ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Mechanism-based strain gradient crystal plasticity. / Han, Chung Souk; Gao, Huajian; Huang, Yonggang; Nix, William D.
In: Materials Research Society Symposium Proceedings, Vol. 821, P6.1, 01.12.2004, p. 301-306.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Mechanism-based strain gradient crystal plasticity
AU - Han, Chung Souk
AU - Gao, Huajian
AU - Huang, Yonggang
AU - Nix, William D.
PY - 2004/12/1
Y1 - 2004/12/1
N2 - To model size dependent plastic deformation at micron and submicron length scales the theory of mechanism-based strain gradient plasticity (MSG) was developed. The MSG approach incorporates the concept of geometrically necessary dislocations into continuum plastic constitutive laws via Taylor hardening relation. This concept is extended here to develop a mechanism-based strain gradient theory for crystal plasticity (MSG-CP) based on the notions of dislocation density tensor and resolved density force corresponding to the Peach-Koehler force in dislocation theory. An effective density of geometrically necessary dislocations is defined on the basis of resolved density force for specific slip systems and is incorporated into the plastic constitutive laws via Taylor relation.
AB - To model size dependent plastic deformation at micron and submicron length scales the theory of mechanism-based strain gradient plasticity (MSG) was developed. The MSG approach incorporates the concept of geometrically necessary dislocations into continuum plastic constitutive laws via Taylor hardening relation. This concept is extended here to develop a mechanism-based strain gradient theory for crystal plasticity (MSG-CP) based on the notions of dislocation density tensor and resolved density force corresponding to the Peach-Koehler force in dislocation theory. An effective density of geometrically necessary dislocations is defined on the basis of resolved density force for specific slip systems and is incorporated into the plastic constitutive laws via Taylor relation.
UR - http://www.scopus.com/inward/record.url?scp=14944381813&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=14944381813&partnerID=8YFLogxK
M3 - Conference article
VL - 821
SP - 301
EP - 306
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
SN - 0272-9172
M1 - P6.1
ER -