Evaluation of the recent IIW (2012) and ISO (2013) strength equations for axially loaded CHS K gap joints

Vegte, G.J. van der; Wardenier, J.

doi:10.1002/stco.201410022

Cited by 5 publications

(2 citation statements)

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“…The use of numerical simulation to evaluate the mechanical behavior of joints is adopted worldwide. The latest IIW (2012) and ISO 14346 (2013) recommendations for uniplanar circular hollow section K joints are primarily based on numerical data and checked with experimental results, see van der Vegte and Wardenier (2014). The geometric parameters of multiplanar KK joints presented in Figure 1 …”

Section: Numerical Methodology For Analyses Of Tubular Kk Multiplanarmentioning

confidence: 99%

“…For these structures, the multiplanar configuration ( Figure 1) with a circular hollow section is widely employed. The design of multiplanar hollow KK joints traditionally follows the guidelines for uniplanar joints, which were developed based on laboratory test results and most recently revised based on Finite Element simulations (van der Vegte and Wardenier 2014). The standard practice is to treat every plane separately and to multiply the resistance by a unique correlation coefficient that is independent of the joint geometry.…”

Section: Introductionmentioning

confidence: 99%

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Numerical methodology for analyses of tubular KK multiplanar steel joints

2017

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Herein is presented a numerical methodology for a static resistance analysis of symmetrically loaded multiplanar KK joints in circular hollow steel sections. This methodology addresses factors related to the simulation of KK joints such as the material properties, the boundary conditions, mesh generation and refinement, incremental load steps and failure criteria. An objective criterion is proposed to identify the two failure modes most often occurring in KK joints. Failure mode 1 is observed when two neighboring diagonal braces loaded in the same sense act as one brace penetrating the chord together. In the failure mode 2, excessive deformation is observed in the chord region between two neighboring braces, folding the chord wall. However, in some cases the failure mode is not easily identified or both failure types are present. The proposed criterion objectively identifies the failure mode. In order to compute the joint resistance, an important failure criterion often adopted in literature for uniplanar K joints is the one known as Lu's deformation. In this paper, a strategy is proposed, which is an extension of Lu's criterion for multiplanar KK joints.

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Section: Numerical Methodology For Analyses Of Tubular Kk Multiplanarmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%