Abstract
A model for strain gradient crystal visco-plasticity is formulated along the lines proposed by Fleck andWillis (2009) for isotropic plasticity. Size-effects are included
in the model due to the addition of gradient terms in both the free energy as well as through a dissipation potential. A finite element solution method is presented, which delivers the slip-rate field and the velocity-field based on two minimum principles. Some plane deformation
problems relevant for certain specific orientations of a face centered cubic crystal under plane loading conditions are studied, and effective in-plane parameters are developed based on the crystallographic properties of the material. The problem of cyclic shear of a single crystal between rigid platens is studied as well as void growth of a cylindrical void.
| Original language | English |
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| Title of host publication | Proceedings of the 17th International Symposium on Plasticity & Its Current Applications |
| Publisher | NEAT Press |
| Publication date | 2011 |
| Pages | 13-15 |
| ISBN (Print) | 0-9659463-1-2 |
| Publication status | Published - 2011 |
| Event | International Symposium on Plasticity & Its Current Applications - Puerto Vallarta, Mexico Duration: 1 Jan 2011 → … Conference number: 17 |
Conference
| Conference | International Symposium on Plasticity & Its Current Applications |
|---|---|
| Number | 17 |
| City | Puerto Vallarta, Mexico |
| Period | 01/01/2011 → … |