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Calculation of mixed mode (I/II) stress intensities at sharp V‐notches using finite element notch opening and sliding displacements
Author(s) -
Hussain Mirzaul Karim,
Murthy K.S.R.K.
Publication year - 2019
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12977
Subject(s) - finite element method , displacement (psychology) , computation , benchmark (surveying) , displacement field , structural engineering , simple (philosophy) , stress (linguistics) , work (physics) , element (criminal law) , stress intensity factor , materials science , mechanics , mathematical analysis , computer science , mathematics , physics , engineering , algorithm , mechanical engineering , geology , philosophy , linguistics , psychology , geodesy , epistemology , law , political science , psychotherapist
In this paper, a simple, robust, and an efficient technique has been proposed for accurate estimation of mixed mode (I/II) notch stress intensity factors (NSIFs) of sharp V‐notched configurations using finite element notch opening and sliding displacements at the selected number of nodes along the notch flanks. Unlike the crack problems, displacement field is rarely employed in the notch problems due to complexities introduced by the presence of rigid body displacements. One of the main emphasis of the present work is to neatly bypass these rigid body displacements and develop a simple approach for accurate computation of the NSIFs so that it can be easily incorporated in the existing code. Several benchmark problems have been analyzed. The results obtained using the present method show excellent agreement with the solutions available in the literature. Some new results have also been reported in the present work.