Mode-III fatigue of welded joints in steel maritime structures

Title

Mode-III fatigue of welded joints in steel maritime structures: Weld notch shear stress distributions and effective notch stress based resistance

 Author

Bufalari, G. (TU Delft Ship Hydromechanics and Structures)
den Besten, J.H. (TU Delft Ship Hydromechanics and Structures) ORCID 0000-0002-8726-218X
Kaminski, M.L. (TU Delft Ship Hydromechanics and Structures)

Date

2022

 Abstract

The predominant mode-I response of maritime structures can be multiaxial, involving out-of-plane mode-III shear components. Semi-analytical mode-III notch stress distribution formulations have been established for critical details like welded T-joints and cruciform joints, reflecting (non-)symmetry with respect to half the plate thickness. Using a stress distribution formulation based effective notch stress as fatigue strength criterion, the mode-III welded joint mid-cycle fatigue resistance characteristics have been investigated. In comparison to mode-I, the material characteristic length and resistance curve slope estimate suggest the fatigue damage process to be even more an initiation related near-surface phenomenon. Mean shear stress effects seem insignificant.


 Subject

Effective notch stress
Fatigue
Mode-III
Stress distribution
Welded joints

 To reference this document use:

http://resolver.tudelft.nl/uuid:311e5d1c-88eb-441c-bac3-f538a62ad235

 DOI

https://doi.org/10.1016/j.ijfatigue.2022.107210

 ISSN

0142-1123

 Source

International Journal of Fatigue, 165

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2022 G. Bufalari, J.H. den Besten, M.L. Kaminski
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