Atomistic studies of the elastic properties of metallic Bcc nanowires and films
Författare
Redaktör
- R. Pyrz
- J. C. Rauche
Summary, in English
In this paper a systematic study of the surface influence on the elastic properties of nanosized iron and tungsten wires and films is performed. Single crystal
defect-free nanowires and nanofilms are examined through molecular statics simulations, and the concepts of surface energy and third order elastic constants are
used in an attempt to describe the elastic properties. For structures where the relaxation strains are small in magnitude, reasonable agreements between the continuum
mechanical solutions and the simulations are obtained. For structures where the relaxation strains are significant it is shown that third order elastic continuum theory
is not sufficient to describe the elastic properties; in fact, sometimes it actually in-
creases the discrepancies between the simulated and predicted results.
defect-free nanowires and nanofilms are examined through molecular statics simulations, and the concepts of surface energy and third order elastic constants are
used in an attempt to describe the elastic properties. For structures where the relaxation strains are small in magnitude, reasonable agreements between the continuum
mechanical solutions and the simulations are obtained. For structures where the relaxation strains are significant it is shown that third order elastic continuum theory
is not sufficient to describe the elastic properties; in fact, sometimes it actually in-
creases the discrepancies between the simulated and predicted results.
Avdelning/ar
Publiceringsår
2009
Språk
Engelska
Sidor
221-230
Publikation/Tidskrift/Serie
IUTAM Bookseries
Volym
13
Länkar
Dokumenttyp
Konferensbidrag
Förlag
Springer
Ämne
- Applied Mechanics
Conference name
IUTAM Symposium on modelling of nanomaterials and nanosystems
Conference date
2008-05-19
Conference place
Aalborg, Denmark
Status
Published
ISBN/ISSN/Övrigt
- ISBN: 978-1-4020-9556-6