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Over-deterministic method: The influence of rounding numbers on the accuracy of the values of williams’ expansion terms

SYSNO ASEP	0479812
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Over-deterministic method: The influence of rounding numbers on the accuracy of the values of williams’ expansion terms
Author(s)	Růžička, V. (CZ) Malíková, Lucie (UFM-A)_ORCID Seitl, Stanislav (UFM-A)_{RID, ORCID}
Number of authors	3
Source Title	Frattura ed Integrita Strutturale. - : Gruppo Italiano Frattura - ISSN 1971-8993 Roč. 11, č. 42 (2017), s. 128-135
Number of pages	8 s.
Language	eng - English
Country	IT - Italy
Keywords	Over-deterministic ; Fracture mechanics ; Rounding numbers ; Stress field ; Williams’ expansion
Subject RIV	JL - Materials Fatigue, Friction Mechanics
OECD category	Audio engineering, reliability analysis
R&D Projects	GA17-01589S GA ČR - Czech Science Foundation (CSF)
Institutional support	UFM-A - RVO:68081723
UT WOS	000423952200014
EID SCOPUS	85030782792
DOI	10.3221/IGF-ESIS.42.14
Annotation	A study on the accuracy of the values of Williams’ expansion terms influenced by rounding numbers is presented. The results are presented taking into account a three-point bend single edge notched beam. Crack tip stress tensor components are expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely via its multi-parameter formulation, i.e. by Williams’ power series (WPS). Determination of the coefficients of the terms of this series is performed using the least squares-based regression technique known as the over-deterministic method (ODM), for which displacements data obtained numerically in software ANSYS are taken as inputs. The values of Williams’ expansion terms based on the displacement data obtained are calculated by using various levels of rounding numbers and the results are compared and discussed.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2018

Number of the records: 1