Detail publikace

Accuracy of approximation of stress field in cracked bodies for failure zone extent estimation

MALÍKOVÁ, L. VESELÝ, V. SOBEK, J. FRANTÍK, P.

Originální název

Accuracy of approximation of stress field in cracked bodies for failure zone extent estimation

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Accurate knowledge of stress/displacement field in a cracked specimen is very important for fracture analysis and for instance in the case of quasi-brittle materials, where the zone of non-linear behavior affecting the overall fracture process is larger than in other (brittle) materials, it can play a key role. In this paper, it is shown that Williams expansion can describe the crack-tip fields reliably, provided that considerably more than one or two terms of the power series are taking into account. Such an approach, referred to as multi-parameter fracture mechanics, is usually not used for a common assessment of crack behavior. The study presented shows that especially in larger distances from the crack tip the higher-order terms are crucial in order to minimize the error corre¬sponding with use of only one or two fracture parameters (the first and second terms of Williams expansion). In other words, considering of the higher-order terms of the Williams expansion is essential if knowledge of accurate stress/displacement fields around the crack tip in the analysed specimen/structure is required.

Klíčová slova

Near-crack-tip fields, Williams power expansion, over-deterministic method, finite elements, failure zone extent

Autoři

MALÍKOVÁ, L.; VESELÝ, V.; SOBEK, J.; FRANTÍK, P.

Rok RIV

2013

Vydáno

11. 3. 2013

Místo

Toledo, Španělsko

ISBN

978-84-941004-0-6

Kniha

Fracture Mechanics of Concrete and Concrete Structures

Strany od

1

Strany do

10

Strany počet

10

BibTex

@inproceedings{BUT102198,
  author="Lucie {Malíková} and Václav {Veselý} and Jakub {Sobek} and Petr {Frantík}",
  title="Accuracy of approximation of stress field in cracked bodies for failure zone extent estimation",
  booktitle="Fracture Mechanics of Concrete and Concrete Structures",
  year="2013",
  pages="1--10",
  address="Toledo, Španělsko",
  isbn="978-84-941004-0-6"
}