Investigations into residual stresses in S690 cold-formed circular hollow sections due to transverse bending and longitudinal welding

Hu, Yue; Chung, Kwok Fai; Ban, Huiyong; Nethercot, D.A.

doi:10.1016/j.engstruct.2020.110911

Cited by 23 publications

(19 citation statements)

References 31 publications

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“…Dieser Effekt wird in den gängigen Modellen für die Eigenspannungen an kaltgefertigten Rohren und Hohlprofilen soweit nicht berücksichtigt. Erste Ansätze wurden von Chen & Ross [9] entwickelt und in jüngster Zeit auch für Hohlprofile bis zu S960 untersucht [10–13]. Den meisten Modellen liegt die Annahme zugrunde, dass es vor dem Schweißprozess zu einem elastischen Rückfedern des kaltgeformten Blechs kommt.…”

Section: Imperfektionenunclassified

Experimentelle Untersuchungen an hochfesten Rohren für den Kran‐ und Gerüstbau

Gubetini

Mensinger

2023

Stahlbau

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Für die Herleitung und Verifikation der Bemessungsgrundlagen für kaltgeformte, hochfeste Kran‐ und Gerüstbaurohre bis zu S960 liegen bisher kaum Versuchsergebnisse vor. In diesem Beitrag stellen die Autoren die Durchführung und Ergebnisse zentrischer Knickversuche an derartigen Rohren vor. Messungen von Eigenspannungen über das Sägeschnittverfahren an unverzinkten und verzinkten Rohren in S960 werden erläutert und diskutiert. Zudem werden die mittels 3D‐Scan erfassten geometrischen Imperfektionen der Prüfkörper evaluiert und mit den Ansätzen der Europäischen Knicklinien verglichen. Die Verformungen der Prüfkörper in den Knickversuchen wurden dabei über digitale Bildkorrelation (DIC) erfasst. Die Effekte der Verzinkung und der Knickrichtung auf die Traglast werden hervorgehoben und erläutert.

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Section: Imperfektionenunclassified

Experimentelle Untersuchungen an hochfesten Rohren für den Kran‐ und Gerüstbau

Gubetini

Mensinger

2023

Stahlbau

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“…The prediction of the residual stresses is also very important for metal forming processes. However, the majority of authors, e.g., [ 39 , 40 , 41 , 42 , 43 , 44 , 45 ], studied this phenomenon as only welding problems or metal forming problems, thus separately and not as two consecutive steps. Some authors [ 46 , 47 , 48 ] dealt with the determination of residual stress in formed members and predicted results were compared with the experiments (sectioning, hole drilling method and X-ray diffraction).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

et al. 2023

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Concerning the increasingly widespread utilization of the finite element method (FEM), the concept of the so-called virtual factory is also gaining ground, and not only in the engineering industry. This approach does not use numerical simulations of individual production technologies separately but treats the entire production process as a chain of interrelated technologies. Thus, the output data from one technology is taken as input data for the following technology. The resulting thermal and mechanical effects are then not only dealt with within one technology but always comprehensively within the production process. In the consideration of the loading and subsequent service lives of manufactured components, values of residual stresses are one of the very important characteristics. For these reasons, this paper deals with the effect of residual stresses’ magnitude and distribution during the formation and the final springback of the seamed pipe end section with and without respect to the influence of the preceding welding. The resulting residual stress values from numerical simulations are subsequently compared with the actual values of residual stresses experimentally measured using X-ray diffraction.

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“…The lack of economic and reliable design rules is one of the primary reasons hampering the structural applications of CFHSS tubular members on a large scale. Nonetheless, some research had been conducted investigating the performance of HSS at material (Ma et al 2015;Hu et al 2020;, member (Yu and Tall 1968;Usami and Fukumoto 1982;Gao et al 2009;Ban et al 2013;Liew et al 2016;Ma et al 2017 andWang and Gardner 2017;Jiang et al 2018) and joints level.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Cold-Formed High-Strength Steel Circular Hollow Sections under Combined Compression and Bending

Pandey

Chan

et al. 2022

J. Struct. Eng.

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The ultimate strengths of cold-formed high strength steel (CFHSS) circular hollow sections (CHS) beam-columns have been experimentally and numerically studied in this investigation. The steel grades of CHS members were S700, S900 and S1100 with the nominal 0.2% proof stresses of 700, 900 and 1100 MPa, respectively. In the experimental program, 32 CHS short beam-columns were axially compressed. The test results obtained in this study were used to develop an accurate finite element (FE) model. The developed FE model precisely replicated the overall structural behaviour of CHS beam-column test specimens. After validation, a detailed parametric study was conducted. The test results of CFHSS CHS long beam-columns reported by Ma et al. (2021) were also included in this study. In the parametric study, 150 long and short beam-columns (LBC and SBC) were analysed. The values of diameter-to-thickness ratio of CHS members varied from 9.7 to 108. The ultimate compression capacities of 190 test and numerical data were compared with the nominal compression capacities predicted from American, Australian and European standards. The safety levels of design rules given in these standards were examined by performing a reliability analysis. It is

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Investigations into residual stresses in S690 cold-formed circular hollow sections due to transverse bending and longitudinal welding

Cited by 23 publications

References 31 publications

Experimentelle Untersuchungen an hochfesten Rohren für den Kran‐ und Gerüstbau

Experimentelle Untersuchungen an hochfesten Rohren für den Kran‐ und Gerüstbau

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

Structural Performance of Cold-Formed High-Strength Steel Circular Hollow Sections under Combined Compression and Bending

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