Analytical-Numerical Determination of Stress Distribution around a Tip of Polygon-Like Inclusion

0465826 - ÚFM 2017 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Krepl, Ondřej - Klusák, Jan - Profant, T.
Analytical-Numerical Determination of Stress Distribution around a Tip of Polygon-Like Inclusion.
Advances in Fracture and Damage Mechanics XV. Pfaffikon: Trans Tech Publications Ltd, 2016 - (Toribio, J.; Mantič, V.; Sáez, A.; Aliabadi, M.), s. 94-98. Key Engineering Materials, 713. ISBN 978-3-03835-716-2. ISSN 1013-9826.
[FDM 2016 - International Conference on Fracture and Damage Mechanics /15./. Alicante (ES), 14.09.2016-16.09.2016]
Grant CEP: GA ČR(CZ) GA16-18702S
Institucionální podpora: RVO:68081723
Klíčová slova: Sharp inclusion * singular stress concentrator * singular and non-singular stress terms
Kód oboru RIV: JL - Únava materiálu a lomová mechanika
http://www.scientific.net/KEM.713.94.pdf

A stress distribution in vicinity of a tip of polygon-like inclusion exhibits a singular stress behaviour. Singular stresses at the tip can be a reason for a crack initiation in composite materials. Knowledge of stress field is necessary for reliable assessment of such composites. A stress field near the general singular stress concentrator can be analytically described by means of Muskhelishvili plane elasticity based on complex variable functions. Parameters necessary for the description are the exponents of singularity and Generalized Stress Intensity Factors (GSIFs). The stress field in the closest vicinity of the SMI tip is thus characterized by 1 or 2 singular exponents, and corresponding GSIFs that follow from numerical solution. In order to describe stress filed further away from the SMI tip, the non-singular exponents, and factors corresponding to these non-singular exponents have to be taken into account. Analytical-numerical procedure of determination of stress distribution around a tip of sharp material inclusion is presented. Parameters entering to the procedure are varied and tuned. Thus recommendations are stated in order to gain reliable values of stresses and displacements.
Trvalý link: http://hdl.handle.net/11104/0264369