000014192 001__ 14192
000014192 005__ 20161115100144.0
000014192 04107 $$aeng
000014192 046__ $$k2016-08-21
000014192 100__ $$aWei, Yueguang
000014192 24500 $$aCharacterization of damage and failure for nanocrystalline materials

000014192 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014192 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014192 506__ $$arestricted
000014192 520__ $$2eng$$aIn the present research, mechanical behaviors of the nanocrystalline materials considering the damage developing on the grain boundaries are investigated systematically. A mixed-mode cohesive interface model is used to describe the damage and failure process of the materials. Based on the mixed-mode cohesive interface model, the grain boundary damage are defined and characterized. In order to describe the size effect, the strain gradient plasticity theory is used for grain materials and the interface energy effect is considered along grain boundary. In the present results, the overall stress-strain relations and corresponding damage evolution curves are obtained and as the functions of several independent parameters. The present results show that both the overall strength and ductility of the nanocrystalline materials are closely depended on the grain boundary damage evolution and the overall stress-strain curve displays a catastrophic feature. Further discussions on the cell representativity and damage of nanoscale particle-reinforced materials are carried out.

000014192 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014192 653__ $$a

000014192 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014192 720__ $$aWei, Yueguang
000014192 8560_ $$ffischerc@itam.cas.cz
000014192 8564_ $$s181672$$uhttps://invenio.itam.cas.cz/record/14192/files/PO.SM03-2.08.128.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1877, code PO.SM03-2.08.128
.
000014192 962__ $$r13812
000014192 980__ $$aPAPER