Publication detail

Scale bridging in computational modelling of quasi-brittle fracture of cementitious composites

VALA, J. KOZÁK, V. JEDLIČKA, M.

Original Title

Scale bridging in computational modelling of quasi-brittle fracture of cementitious composites

English Title

Scale bridging in computational modelling of quasi-brittle fracture of cementitious composites

Type

conference paper

Language

en

Original Abstract

Computational prediction damage in cementitious composites, as steel fibre reinforced ones, under mechanical, thermal, etc. loads, manifested as creation of micro-fractured zones, followed by poten-tial initiation and evolution of macroscopic cracks, is a rather delicate matter, due to the necessity of bridging between micro- and macro-scales. This short paper presents a relatively simple approach, based on the nonlocal viscoelasticity model, coupled with cohesive crack analysis, using extended finite element techniques. Such model admits proper verification of its existence and convergence results, from the physical and mathematical formulation up to software implementation of relevant algorithms. Its practical applicability is documented on a sequence of representative computational examples.

English abstract

Computational prediction damage in cementitious composites, as steel fibre reinforced ones, under mechanical, thermal, etc. loads, manifested as creation of micro-fractured zones, followed by poten-tial initiation and evolution of macroscopic cracks, is a rather delicate matter, due to the necessity of bridging between micro- and macro-scales. This short paper presents a relatively simple approach, based on the nonlocal viscoelasticity model, coupled with cohesive crack analysis, using extended finite element techniques. Such model admits proper verification of its existence and convergence results, from the physical and mathematical formulation up to software implementation of relevant algorithms. Its practical applicability is documented on a sequence of representative computational examples.

Keywords

cementitious composites; quasi-brittle fracture; macro- and micro-cracking; scale bridging; nonlocal elasticity; extended finite element techniques

Released

31.12.2021

Publisher

TransTech

Location

Zurich

ISBN

1012-0394

Periodical

Solid State Phenomena

State

CH

Pages from

7777-1

Pages to

7777-6

Pages count

6

Documents

BibTex


@inproceedings{BUT167895,
  author="Jiří {Vala} and Vladislav {Kozák} and Michal {Jedlička}",
  title="Scale bridging in computational modelling of quasi-brittle fracture of cementitious composites  
",
  annote="Computational prediction damage in cementitious composites, as steel fibre reinforced ones, under mechanical, thermal, etc. loads, manifested as creation of micro-fractured zones, followed by poten-tial initiation and evolution of macroscopic cracks, is a rather delicate matter, due to the necessity of bridging between micro- and macro-scales. This short paper presents a relatively simple approach, based on the nonlocal viscoelasticity model, coupled with cohesive crack analysis, using extended finite element techniques. Such model admits proper verification of its existence and convergence results, from the physical and mathematical formulation up to software implementation of relevant algorithms. Its practical applicability is documented on a sequence of representative computational examples.",
  address="TransTech",
  booktitle="ICBM 2020 Proceedings",
  chapter="167895",
  howpublished="online",
  institution="TransTech",
  year="2021",
  month="december",
  pages="7777-1--7777-6",
  publisher="TransTech",
  type="conference paper"
}