000015340 001__ 15340
000015340 005__ 20161115100218.0
000015340 04107 $$aeng
000015340 046__ $$k2016-08-21
000015340 100__ $$aSvendsen, Bob
000015340 24500 $$aStrongly versus weakly non-local dislocation transport and pile- up

000015340 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015340 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015340 506__ $$arestricted
000015340 520__ $$2eng$$aThe purpose of this work is the continuum modeling of transport and pile-up of infinite discrete dislocation walls driven by nonlocal interaction and external loading. The underlying model for dislocation wall interaction is based on the non-singular Peierls-Nabarro (PN) model [e.g., 4, Chapter 8]. The influence of strongly non-local (SNL; long-range) interaction, and its approximation as weakly nonlocal (WNL; short-range), are studied in the context of wall pile-up at a boundary. The boundary is modeled via a spatially dependent dislocation mobility. The pile-up behavior predicted by the current SNL-based continuous wall distribution modeling is consistent with that predicted by discrete wall distribution modeling [e.g., 1, 6]. Both deviate substantially from the pile-up behavior predicted by WNL-based continuous wall distribution modeling [e.g., 2, Chapter 2]. As such, it is essential to account for the intrinsic SNL character of the interaction between same-sign dislocations ”close” to the boundary. Gradient-based WNL ”approximation” of this interaction is not justified.

000015340 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015340 653__ $$a

000015340 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015340 720__ $$aSvendsen, Bob
000015340 8560_ $$ffischerc@itam.cas.cz
000015340 8564_ $$s113946$$uhttps://invenio.itam.cas.cz/record/15340/files/TS.SM10-1.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2464, code TS.SM10-1.03
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000015340 962__ $$r13812
000015340 980__ $$aPAPER