Journal Article

FZJ-2020-01934

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Finite element optimization of sample geometry for measuring the torsional shear strength of glass/metal joints

Fakouri Hasanabadi, M. ; Malzbender, J. (Corresponding author)FZJ* ; Groß-Barsnick, S. M.FZJ* ; Abdoli, H. ; Kokabi, A. H. ; Faghihi-Sani, M. A.

2020
Ceramurgia73399 Faenza

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Please use a persistent id in citations: http://hdl.handle.net/2128/24842  doi:10.1016/j.ceramint.2019.10.221

Abstract: Assessment of mechanical properties of glass/metal joints is a challenging process, especially when the application relevant conditions of the joints have to be considered in the test design. In this study, a finite element method (FEM) is implemented to analyze a torsional shear strength test designed for glass-ceramic/steel joints aiming towards solid oxide fuel/electrolysis cells application. Deviations from axial symmetry of the square flanges (ends) of respective hourglass-shaped specimens and also supporting and loading sockets of the test set-up are included in the model to simulate conditions close to reality. Undesirable tensile stress and also shear stress concentration appear at the outer edge of glass-ceramic layers, which are less for the hollow-full specimen. The simulation results show that for a specimen with either 9 mm thick square- or 6 mm thick triangular-flanges, locally enhanced tensile stresses almost disappear, resulting in a symmetric shear stress distribution. The difference between the analytically derived nominal shear strength and the real critical shear stress derived via simulation reduces with decreasing the fracture torque.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)
2. Zentralinstitut für Technologie (ZEA-1)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2020

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Database coverage:
; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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