Detail publikačního výsledku

Elasticity and Strength of Nano-Fibre Reinforced Composites from First Principles

ČERNÝ, M.; POKLUDA, J.

Originální název

Elasticity and Strength of Nano-Fibre Reinforced Composites from First Principles

Anglický název

Elasticity and Strength of Nano-Fibre Reinforced Composites from First Principles

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Ab initio calculations of elastic moduli and theoretical uniaxial strength of composite lamina having continuous nano-fibre reinforcements are performed using pseudo-potential plane-wave code. Obtained results are used to verify validity of macro-scale empirical relations for composites (rules of mixtures) on the nano-scale. All quantities are computed from the dependence of crystal energy on a suitable deformation parameter. Results for molybdenum nano-fibres in vanadium matrix, presented as a particular example of the ab-initio analysis, reveal that elastic moduli of ideal composites increase with molybdenum concentration, following the simplest form of the linear mixture rule. On the other hand, the theoretical strength reaches the value corresponding to strength of pure molybdenum already at about 60% atomic concentration of Mo wires in the composite.

Anglický abstrakt

Ab initio calculations of elastic moduli and theoretical uniaxial strength of composite lamina having continuous nano-fibre reinforcements are performed using pseudo-potential plane-wave code. Obtained results are used to verify validity of macro-scale empirical relations for composites (rules of mixtures) on the nano-scale. All quantities are computed from the dependence of crystal energy on a suitable deformation parameter. Results for molybdenum nano-fibres in vanadium matrix, presented as a particular example of the ab-initio analysis, reveal that elastic moduli of ideal composites increase with molybdenum concentration, following the simplest form of the linear mixture rule. On the other hand, the theoretical strength reaches the value corresponding to strength of pure molybdenum already at about 60% atomic concentration of Mo wires in the composite.

Klíčová slova

Metal matrix, nano fibres, ab initio, theoretical strength, elastic moduli

Klíčová slova v angličtině

Metal matrix, nano fibres, ab initio, theoretical strength, elastic moduli

Autoři

ČERNÝ, M.; POKLUDA, J.

Vydáno

01.01.2006

Místo

Biarritz, France

Kniha

From the Science of Composites to Engineering Applications: the dawning future of composites

Strany od

220

Strany počet

7

BibTex

@inproceedings{BUT20148,
  author="Miroslav {Černý} and Jaroslav {Pokluda}",
  title="Elasticity and Strength of Nano-Fibre Reinforced Composites from First Principles",
  booktitle="From the Science of Composites to Engineering Applications: the dawning future of composites",
  year="2006",
  pages="7",
  address="Biarritz, France"
}