ORBi: Péron-Lührs Vincent - A two-scale model predicting the mechanical sliding and opening behavior of grain boundaries in nanocrystalline solids

Reference : A two-scale model predicting the mechanical sliding and opening behavior of grain bounda...


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/2268/99054

Title :	A two-scale model predicting the mechanical sliding and opening behavior of grain boundaries in nanocrystalline solids
Language :	English
Author, co-author :	Péron-Lührs, Vincent [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
	Jérusalem, Antoine [IMDEA Materials > > > >]
	Sansoz, Frédéric [The University of Vermont > > > >]
	Stainier, Laurent [Ecole Centrale de Nantes > > > >]
	Noels, Ludovic [Université de Liège - ULg > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
Publication date :	Nov-2011
Main document title :	Proceedings of the 5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN2011)
Editor :	Hogge, Michel
	Van Keer, Roger
	Dick, Erik
	Malengier, Benny
	Slodicka, Marian
	Geuzaine, Christophe
	Béchet, Eric
	Noels, Ludovic
	Remacle, Jean-François
Pages :	9
On invitation :	No
Audience :	International
ISBN :	978-2-9601143-1-7
Event name :	5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN2011)
Event date :	14-17 november 2011
Event organizer :	Université de Liège, Universiteit Gent, Université Catholique de Louvain
Event place (city) :	Liège
Event country :	Belgium
Abstract :	[en] In polycrystalline materials with nanosized grains smaller than 100 nm, the deformation mechanisms taking place at grain boundaries (GBs) become dominant compared to intragranular crystal plasticity. Recent studies have revealed that more accurate mechanical properties can be obtained by choosing the relevant GB character distribution (GBCD). We use here a numerical multiscale approach (an extension of a previous work [1]) to predict the mechanical behavior of nanostructured metals according to their GBCD composed of either high angle GBs (HAB) or low angle GBs (LAB). The quasicontinuum method (QC) is used to obtain the GB mechanical response at the nanoscale under simple shear (sliding part) and tensile load (opening part). These QC results are then used in a finite element code (direct numerical simulation-DNS) as GB constitutive models. This two-scale framework does not suffer from length scales limitations conventionally encountered when considering the two scales separately.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/99054
Other URL :	http://www.ltas.ulg.ac.be/acomen2011/NewWebSite/docs/Abstracts/Numerical_Multiscale_Methods/Numerical%20Multiscale%20Methods01V2.pdf

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Restricted access	2011_ACOMEN_GBS.pdf		Author postprint	4.85 MB	Request copy

All documents in ORBi are protected by a user license.

Dspace v1.5