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Stress concentration factors of multi-planar tubular KT-joints subjected to in-plane bending moments
Zavvar, E.; Hectors, K.; De Waele, W. (2021). Stress concentration factors of multi-planar tubular KT-joints subjected to in-plane bending moments. Mar. Struct. 78: 103000. https://dx.doi.org/10.1016/j.marstruc.2021.103000
In: Marine Structures. Elsevier: Oxford. ISSN 0951-8339; e-ISSN 1873-4170, more
Peer reviewed article  
Available in  Authors 
Keyword
    Marine/Coastal
Author keywords
    Stress concentration factor (SCF); Fatigue; Tubular multi-planar KT-Joint; Parametric equation; In-plane bending (IPB)
Authors  Top 
  • Zavvar, E.
  • Hectors, K., more
  • De Waele, W., more
Abstract
    Numerical research on the stress concentration factors (SCFs) in uniplanar tubular joints is abundantly reported in literature. However, it has been shown that SCF equations for uniplanar joints can lead to both under- or overestimation of the SCFs in multi-planar joints. In this paper, a parametric finite element study of 81 different three-planar KT joints subjected to five different in-plane bending loading conditions is performed. The effects of different non-dimensional geometrical parameters on the SCF values at the crown locations of the central and outer braces are studied. Based on nonlinear regression analyses of the finite element results, a new set of SCF equations is developed and presented.
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