Analytical approximation of crack-tip stress field: Study on efficient determination of coefficients of higher order terms of Williams power expansion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU121320" target="_blank" >RIV/00216305:26110/16:PU121320 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.713.207" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.713.207</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.713.207" target="_blank" >10.4028/www.scientific.net/KEM.713.207</a>

Result language

angličtina

Original language name

Analytical approximation of crack-tip stress field: Study on efficient determination of coefficients of higher order terms of Williams power expansion

Original language description

The paper presents a study on accuracy of the multi-parameter approximation of the stress field in a cracked body using Williams power series calibrated according to results of FEM computation. Main attention is paid to a detailed analysis of suitable selection of FE nodes, whose results serve as inputs to the over-deterministic method (ODM) employed for determination of the coefficients of terms of the Williams expansion describing the crack-tip field. Two different ways of FE nodal selection are compared – nodes selected from the crack tip vicinity versus nodes selected from a specific part of the test specimen body in a specific way. Comparison is made with the usage of the authors’ own developed procedures enabling both the determination of the coefficients of the analytical approximation of stress field based on the FE results and the backward reconstruction of the field from those determined terms’ coefficients/functions. The wedge-splitting test (WST) specimen with a crack is taken as example for the study

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Advances in Fracture and Damage Mechanics XV

ISBN

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ISSN

1013-9826

e-ISSN

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Number of pages

5

Pages from-to

207-211

Publisher name

Trans Tech Publications

Place of publication

Switzerland

Event location

Alicante

Event date

Sep 14, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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