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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" }