Detail publikace

Relation between structural size and the discretization density of brittle homogeneous lattice models

VOŘECHOVSKÝ, M. ELIÁŠ, J.

Originální název

Relation between structural size and the discretization density of brittle homogeneous lattice models

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

This paper contains the results of an investigation into the effect of the discretization of lattice models. The study is performed with homogeneous models where all elements share the same strength. Elemental constitutive law is linearly-brittle, meaning that elements behave linearly but are completely removed from the structure as soon as they reach the limit of their strength. The relation between structural size and discretization density is studied with unnotched beams loaded in three point bending (modulus of rupture test). We report the results for regular discretization and irregular networks obtained via Voronoi tessellation. This is carried out for two types of models: these being with and without rotational springs (normal and shear springs are always present). The numerically obtained dependence of strength on discretization density is compared to the analytical size effect formula.

Klíčová slova

lattice model, brittle elements, mesh size, bent beams, size effect

Autoři

VOŘECHOVSKÝ, M.; ELIÁŠ, J.

Rok RIV

2012

Vydáno

3. 12. 2012

Místo

Switzerland

ISSN

1662-9795

Periodikum

Key Engineering Materials (web)

Ročník

2013

Číslo

525-526

Stát

Švýcarská konfederace

Strany od

485

Strany do

488

Strany počet

4

BibTex

@article{BUT98065,
  author="Miroslav {Vořechovský} and Jan {Eliáš}",
  title="Relation between structural size and the discretization density of brittle homogeneous lattice models",
  journal="Key Engineering Materials (web)",
  year="2012",
  volume="2013",
  number="525-526",
  pages="485--488",
  issn="1662-9795"
}