Generalized stress intensity factors determination by overdeterministic method in case of bi-material junction

0495913 - ÚFM 2019 RIV CH eng A - Abstract
Krepl, Ondřej - Klusák, Jan
Generalized stress intensity factors determination by overdeterministic method in case of bi-material junction.
Proceedings of the First International Conference on Theoretical, Applied and Experimental. Basel: Springer International Publishing, 2018 - (Gdoutos, E.). s. 237-239. ISBN 978-3-319-91988-1. ISSN 2522-560X.
[International Conference on Theoretical, Applied and Experimental Mechanics /1./. 17.07.2018-20.07.2018, Raphos]
R&D Projects: GA MŠMT(CZ) LQ1601; GA ČR(CZ) GA16-18702S
Institutional support: RVO:68081723
Keywords : Bi-material junction * overdeterministic method * non-singular terms
OECD category: Audio engineering, reliability analysis

Generalized stress intensity factors Hk (GSIFs) are the necessary parameters
to describe stress state near bi-material junction tip by means of asymptotic
series. GSIFs can be determined as a least square method solution of overdetermined
system of linear equations. The equations consist of analytical eigenfunctions,
which are determined as a solution of eigenvalue problem and results
of finite elements analysis (FEA), in form of displacement or stress components.
The study presents the application of the overdeterministic method on bi-material
junction problem. The effect of number of input values from FEA and the radius
of their extraction on resulting Hk is studied. The study also shows how number
of calculated singular and non-singular terms affects values of individual factors.
The results are compared with results of the Psi-integral method. Once the GSIFs
are determined, stress solution on particular diameter by asymptotic series is
compared with pure FEA results.
Permanent Link: http://hdl.handle.net/11104/0289829