Modelling approaches to the stress wave propagation in a cracked specimen

0551662 - ÚT 2022 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Kruisová, Alena - Kopačka, Ján - Kober, Jan
Modelling approaches to the stress wave propagation in a cracked specimen.
Computational mechanics 2021. Proceedings of computational mechanics 2021. Plzeň: University of West Bohemia, 2021 - (Adámek, V.; Jonášová, A.; Plánička, S.; Zajíček, M.), s. 129-132. ISBN 978-80-261-1059-0.
[Computational Mechanics 2021 /36./. Srní (CZ), 08.11.2021-10.11.2021]
Grant CEP: GA ČR(CZ) GA19-14237S
Institucionální podpora: RVO:61388998
Klíčová slova: finite element method * contact * crack * harmonic balance method
Obor OECD: Applied mechanics
https://www.kme.zcu.cz/compmech/info_sborniky.php

One of the essential tasks of non-destructive testing is to detect a crack in a specimen. It is well known that a component with a crack exposed to a harmonic excitation of a given frequency
has a nonlinear response as a function of the excitation amplitude. The focus of this paper is the numerical modelling of this phenomenon using the finite element method with the consideration
of the contact constraint at the crack interface. In addition to the nonlinear transient dynamic problem solved by explicit time integration, a more efficient procedure based on the harmonic
balance method is developed. The results of numerical simulations are also compared with experimentally obtained data.
Trvalý link: http://hdl.handle.net/11104/0326980