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Stanovení reálného tvaru trhliny v polyolefinových trubkách

SYSNO ASEP	0353452
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Stanovení reálného tvaru trhliny v polyolefinových trubkách
Title	Determination of real crack shape in polyolefin pipes
Author(s)	Ševčík, Martin (UFM-A)_RID Hutař, Pavel (UFM-A)_{RID, ORCID} Náhlík, Luboš (UFM-A)_{RID, ORCID}
Number of authors	3
Source Title	SEMDOK 2010. - Žilina : University of Žilina, 2010 - ISBN 978-80-554-0157-7
Pages	s. 208-211
Number of pages	4 s.
Action	SEMDOK 2010
Event date	27.01.2010-29.01.2010
VEvent location	Terchová
Country	SK - Slovakia
Event type	EUR
Language	cze - Czech
Country	SK - Slovakia
Keywords	crack ; polyethylen pipe ; fracture mechanics ; crack shape
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GD106/09/H035 GA ČR - Czech Science Foundation (CSF)
	GC101/09/J027 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
Annotation	Práce se zabývá numerickou simulací vedoucí k určení skutečného tvaru trhliny, která vzniká únavovým porušením v polyolefinových trubkách.
Description in English	This work is focused on a numerical modelling of crack propagation in a polyolefin pipe. The three-dimensional model of the cracked pipe is modelled where the geometry of the semi-elliptical crack is variable. The main aim is to find the geometry of the crack in which the stress intensity factor is more or less constant. The crack front is formed by twenty points in order to estimate the stress intensity factor in each point. A few points close to the surface are ignored because of the change of the singularity. The results presented are compared with general relations founded in the literature. The stress intensity factor estimated shows the smooth change between those estimated for constant crack geometry.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2011

Number of the records: 1