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Numerical investigation of stress singularities in cracked bimaterial body

SYSNO ASEP	0318826
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Numerical investigation of stress singularities in cracked bimaterial body
Title	Numericke urceni singularit napětí v bi-materiálovém tělese s trhlinou
Author(s)	Náhlík, Luboš (UFM-A)_{RID, ORCID} Šestáková, Lucie (UFM-A) Hutař, Pavel (UFM-A)_{RID, ORCID}
Source Title	Key Engineering Materials - ISSN 1013-9826 Roč. 385-387, - (2008), s. 125-128
Number of pages	4 s.
Action	International Conference on Fracture and Damage Mechanics /7./
Event date	09.09.2008-11.09.2008
VEvent location	Seoul
Country	KR - Korea, Republic of
Event type	WRD
Language	eng - English
Country	CH - Switzerland
Keywords	bimaterial interface ; stress singularity exponent ; corner singularity ; vertex singularity ; general singular stress concentrator
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	KJB200410803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GP106/06/P239 GA ČR - Czech Science Foundation (CSF)
	GA106/08/1409 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000262126000032
Annotation	Composite materials or generally materials with interfaces are nowadays used in many varied engineering applications. In comparison with classical engineering materials the existence of material interface causes locally different stress distribution, which can strongly influence behaviour of whole structure and can have an important influence on failure mechanisms of such materials. The paper presented is devoted to the investigation of stress singularity exponents of a crack growing in a bimaterial body perpendicularly to the interface and touching the material interface. Discrepancies between value of stress singularity exponent in the centre of bimaterial body and on the free surface were found. The assumptions of linear elastic fracture mechanics (LEFM) and small scale yielding (SSY) are considered. For numerical calculations finite element analysis was used. Results obtained can contribute to a better understanding of failure of materials with interfaces.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2009

Number of the records: 1