Detail publikace

Multi-parameter approximation of stress field in a cracked specimen using purpose-built Java applications

VESELÝ, V. SOBEK, J. TESAŘ, D. FRANTÍK, P. PAIL, T. SEITL, S.

Originální název

Multi-parameter approximation of stress field in a cracked specimen using purpose-built Java applications

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

A quality of multi-parameter approximation of the stress and displacement fields around a crack tip in a non-brittle material test specimen is studied in the paper. The stress field approximation using Williams power series is intended to be utilized for estimation of the nonlinear zone extent which potentially plays a role within methods for determination of true values of fracture parameters of materials exhibiting nonlinear failure. Considering the fact that in the case of elastic-plastic and especially quasi-brittle materials the size of this zone is substantial in comparison to the specimen dimensions, it is necessary to take a large region around the crack tip into account for this task. An automatic utility created to determine the values of coefficients of the higher order terms of Williams power series by usage of over-deterministic method applied on results of finite element analysis of arbitrary mode I test geometry is one of the tested procedures. The second one provides a backward reconstruction of the crack-tip stress field analytically by means of truncated Williams expansion. The developed procedures are based on the support of Java programming language and considerably simplify analyses of the mechanical fields’ description in a farther distance from the crack-tip. The presented research is focused on optimization of selection of FE nodal results for improvement of accuracy of the approximation.

Klíčová slova

Cracked specimen, Near-crack-tip fields; Williams expansion; Higher order terms; Stress field reconstruction; Finite element analysis, Java application

Autoři

VESELÝ, V.; SOBEK, J.; TESAŘ, D.; FRANTÍK, P.; PAIL, T.; SEITL, S.

Rok RIV

2015

Vydáno

15. 5. 2015

Nakladatel

Gruppo Italiano Frattura

ISSN

1971-8993

Periodikum

Frattura ed Integrita Strutturale

Ročník

9

Číslo

33

Stát

Italská republika

Strany od

120

Strany do

133

Strany počet

14

URL

http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_16.pdf

Plný text v Digitální knihovně

http://hdl.handle.net/11012/180524

BibTex

@article{BUT115535,
  author="Václav {Veselý} and Jakub {Sobek} and David {Tesař} and Petr {Frantík} and Tomáš {Pail} and Stanislav {Seitl}",
  title="Multi-parameter approximation of stress field in a cracked specimen using purpose-built Java applications",
  journal="Frattura ed Integrita Strutturale",
  year="2015",
  volume="9",
  number="33",
  pages="120--133",
  doi="10.3221/IGF-ESIS.33.16",
  issn="1971-8993",
  url="http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_16.pdf"
}