Finite element model for rectangular hollow section T joints

Garifullin, Marsel; Pajunen, Sami; Mela, Kristo; Heinisuo, Markku

doi:10.23998/rm.70439

Cited by 8 publications

(6 citation statements)

References 27 publications

(29 reference statements)

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“…For X-joints and T-joints with compensating ending moments, it was recommended the use of chord lengths of at least 10d 0 , and 6d 0 for X-joints with sections with slenderness values lower than 25. These conclusions were similar to the ones found by Voth and Packer (2012a, 2012b, 2012c when studying plate-to-CHS connections, whereas several researchers adopted the 6d 0 minimum chord length criteria Wang, 2015aWang, , 2015bGarifullin et al, 2018).…”

Section: Experimental Program 21 Prototype Propertiessupporting

confidence: 86%

Effect of chord length on CHS-RHS T-joints with slender sections

et al. 2021

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The chord length is an essential geometric property that must be defined in the analysis of isolated joints composed of hollow steel sections, as well as the boundary conditions of the test. The analysis of these parameters' effect on the behavior of joints has been addressed by other studies, mostly with joints between circular hollow sections with compact or semi-compact cross-sections. Recent research about tubular joints has addressed cases with slender sections, where the design of joints containing these sections is still in development. In this context, this study aimed to evaluate the effect of the chord length in the behavior of T-joints between circular hollow section braces and slender rectangular hollow section chords through experimental tests and a numerical study considering the application of axial compression at the braces. The joint behavior was examined through the load-strain and load-deformation curves and the von Mises stress distribution, which allowed the failure mode's determination and the joint resistance value. Chord face failure was observed in the prototypes. It was concluded that a minimum chord length of 0.6m would be the adequate value for the study of the T-joints containing the geometric properties used in this study, which would be equivalent to a chord length five times higher than the width of the crosssection (5b 0 ).

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Section: Experimental Program 21 Prototype Propertiessupporting

confidence: 86%

Effect of chord length on CHS-RHS T-joints with slender sections

et al. 2021

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“…Marcel Garifullin i skupina autora također su pridonijeli analizi ponašanja "T" priključaka izravno zavarenih šupljih pravokutnih presjeka. U radu [11] oni su razvili model konačnih elemenata "T" priključka od visokokvalitetnog čelika, opterećenog aksijalnim silama i momentom savijanja u ravnini. Na temelju rezultata niza eksperimentalnih ispitivanja autori su dali preporuke za odabir optimalnog tipa konačnog elementa.…”

Section: Numerička Istraživanjaunclassified

“…Circular Hollow Section) priključaka, kod kojih krivulja naprezanja i deformacije, odnosno momenta rotacije ne prikazuje preciznu vrijednost za krajnju silu. U istraživanjima [11,[22][23][24][25][26][27], definirana je krajnja vrijednost deformacije koja iznosi 3 % širine (b 0 ) / visine (h 0 ) kojoj odgovara krajnja otpornost priključka, kao što je prikazano na slici 2. u dijagramu P-Δ (siladeformacija).…”

Section: Numerička Istraživanjaunclassified

Numerical and experimental analyses of a steel “Y” joint with damage

2023

JCE

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Steel damage can significantly impact steel elements’ performance, affecting other structural and non-structural building parts and compromising safety and functioning. Understanding the processes and mechanisms of steel structure damage is crucial for improving its durability. This paper presents numerical and experimental analyses of type “Y” joint behaviour of truss beams in a plane loaded by an axial force, with a special accent on the damage effects. This paper presents the results of numerical and experimental research on the directly welded Y joint of the SHS chord and diagonal members with damage in the joint in the form of a narrow vertical rectangular crack. The deviation of the results obtained by the numerical and experimental procedures was, on average 3 % to 5 %.

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“…However, to enable this analysis, the bending moments acting in the joints had to be removed since the bending moments were dependent on the chord lengths, preventing the direct comparison between models with different lengths. Therefore, exclusively for the analysis of the chord length, an experimental/numerical technique was adopted that consisted of fully supporting the chord’s lower face to prevent vertical displacements and, consequently, the emergence of bending moments in the joints (Correia et al, 2019; Garifullin et al, 2018; Lima et al, 2018b).…”

Section: Numerical Modelmentioning

confidence: 99%

Experimental and numerical assessment of CHS-RHS T-joints with chords subjected to axial tensile forces

Neto

Nunes

Sarmanho

et al. 2021

Advances in Structural Engineering

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Hollow steel sections are widely used in the construction industry due to their mechanical properties. Joints used in these structures are the subject of research because of their singular and critical behavior. Joints containing chords with more slender cross-sections and axially loaded are still a challenge for design, especially in joints with circular hollow sections (CHS) in the braces and rectangular hollow sections (RHS) in the chords. In this context, this work aimed to study joints formed by a combination of CHS braces subjected to compression loads and RHS chords axially loaded with tension, welded as T-joints. Experimental tests, a numerical model using finite elements, and a parametric analysis were developed. A new equation for the chord stress function was proposed, including joints containing chords with semi-compact sections in tension. The joint resistance values obtained through the numerical models were compared with the equations from ISO 14346:2013 and with the proposed equation. It was observed that, for the numerical models with geometric properties inside the normative validity ranges of ISO 14346:2013, the mean rate of analytical by numerical joint resistance results was equal to 68%, using either the normative or the proposed equation. In the same way, for models outside the current validity ranges, either the proposed equation or the modified equation from ISO 14346:2013 could be used to design CHS-RHS T-joints with the geometric and material properties analyzed.

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Finite element model for rectangular hollow section T joints

Cited by 8 publications

References 27 publications

Effect of chord length on CHS-RHS T-joints with slender sections

Effect of chord length on CHS-RHS T-joints with slender sections

Numerical and experimental analyses of a steel “Y” joint with damage

Experimental and numerical assessment of CHS-RHS T-joints with chords subjected to axial tensile forces

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