Horváth, András and Kollár, Dénes and Kövesdi, Balázs Géza (2025) Distortions and residual stresses of NSS, HSS and hybrid box sections with single-bevel butt welds: An experimental study. THIN-WALLED STRUCTURES, 208. No. 112834. ISSN 0263-8231
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Abstract
A comprehensive experimental study, focusing on distortions and residual stresses, is conducted on a total of nine box sections with single-bevel butt welds consisting normal strength steel (S355MC), high strength steel (S700MC), and hybrid (NSS-HSS) sections. Dimensional analysis is carried out and the calculated Rosenthal numbers indicate the use of fast MAG welding heat sources, validating the assumption of uniaxial residual stresses. Strain gauge measurements during welding reveals the ratio of maximum welding-induced compressive strains in the flange and web depending on the width-to-thickness ratio. Measured maximum out-of-flatness is closely matching the B/200 recommendation for equivalent geometric imperfections in panels according to EN 1993–1–5 suggesting that a modification of local imperfection limits in welded box sections is needed. The contour method is successfully used to evaluate manufacturing-induced longitudinal residual stress fields, designating a novel application for box sections. Compressive stresses show a clear decreasing trend with increasing thickness. Furthermore, compressive residual stress variation due to pre-welding manufacturing steps is assessed based on the difference between measured welding-induced and manufacturing-induced membrane residual stresses. In addition, a novel residual stress model is developed for NSS, HSS, and hybrid box sections with single-bevel butt welds, incorporating manufacturing parameters such as heat input, weld seam area, number of weld passes, filler material strength, and steel grades of the base material. © 2024 The Author(s)
| Item Type: | Article |
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| Additional Information: | Correspondence Address: Kollár, D.; Department of Structural Engineering, Műegyetem rkp. 3, Budapest, Hungary; email: kollar.denes@emk.bme.hu Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding details: Magyar Tudományos Akadémia, MTA, ÚNKP-23-3-I-BME-194 Funding details: Magyar Tudományos Akadémia, MTA Funding text 1: The presented research program has been financially supported by the Grant MTA-BME Lend\\u00FClet LP2021-06/2021 \\u201CTheory of new generation steel bridges\\u201D program of the Hungarian Academy of Sciences. The research reported in this paper and carried out at the Budapest University of Technology and Economics has been supported by the \\u00DANKP-23-3-I-BME-194 New National Excellence Program of the Ministry for Culture and Innovati on from source of the National Research, Development and Innovation Fund. The project supported by the Doctoral Excellence Fellowship Programme (DCEP) is funded by the National Research Development and Innovation Fund of the Ministry of Culture and Innovation and the Budapest University of Technology and Economics , under a grant agreement with the National Research, Development and Innovation Office. Financial supports are gratefully acknowledged. Funding text 2: The presented research program has been financially supported by the Grant MTA-BME Lend\\u00FClet LP2021\\u201306/2021 \\u201CTheory of new generation steel bridges\\u201D program of the Hungarian Academy of Sciences. The research reported in this paper and carried out at the Budapest University of Technology and Economics has been supported by the \\u00DANKP-23\\u20133-I-BME-194 New National Excellence Program of the Ministry for Culture and Innovation from source of the National Research, Development and Innovation Fund. The project supported by the Doctoral Excellence Fellowship Programme (DCEP) is funded by the National Research Development and Innovation Fund of the Ministry of Culture and Innovation and the Budapest University of Technology and Economics, under a grant agreement with the National Research, Development and Innovation Office. Financial supports are gratefully acknowledged. |
| Subjects: | T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 21 Sep 2026 08:38 |
| Last Modified: | 21 Sep 2026 08:38 |
| URI: | https://real.mtak.hu/id/eprint/246900 |
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