000015421 001__ 15421
000015421 005__ 20161115100221.0
000015421 04107 $$aeng
000015421 046__ $$k2016-08-21
000015421 100__ $$aBrach, Stella
000015421 24500 $$aStrength properties of nanoporous materials: A molecular dynamics approach

000015421 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015421 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015421 506__ $$arestricted
000015421 520__ $$2eng$$aStrength properties of an aluminium single crystal containing a spherical nanovoid are investigated by means of a Molecular Dynamics (MD) approach, in the case of a fixed porosity level and for different values of the void size. Elasto-plastic mechanical response, under triaxial strain-based conditions and including axisymmetric and shear states, are numerically investigated, and allows to identify the corresponding limit stress states. The dependence of the macroscopic strength properties on all the three stress invariants is quantified. Voidsize effects are clearly shown. In detail, it is observed that reducing the void radius induces a strengthening of the sample. Furthermore, the occurrence and the amount of void-size effects strongly depend on the Lode angle, resulting in a shape transition of both meridian and deviatoric strength surfaces when the void radius is varied.

000015421 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015421 653__ $$a

000015421 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015421 720__ $$aBrach, Stella
000015421 8560_ $$ffischerc@itam.cas.cz
000015421 8564_ $$s220110$$uhttps://invenio.itam.cas.cz/record/15421/files/TS.SM13-1.06.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2688, code TS.SM13-1.06
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000015421 962__ $$r13812
000015421 980__ $$aPAPER