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Measurement and numerical modeling of residual stress distribution in welded HSLA component-like I-girders

  • Welded I-girders are used in many applications in steel construction, especially a tailored mixture of different plate thicknesses is difficult to manufacture by rolling. Residual stresses are mainly caused by welding and it is in most cases impractical to anneal the structures. Eurocode 3 (EC 3) does not provide any specific residual stress pattern. Hence, the decision for a particular problem has to be taken by the designer. Stability failures are often decisive in the design of steel beam and column members. Many standards, including EC 3, permit the use of non-linear FEA for the design of structures. Load influencing imperfections are mainly geometric deviations from the ideal shape and residual stresses(both due to assembly or weld manufacturing). Currently the residual stresses are considered by simplified “robust” procedures fixed in common standards(such as EC 3. Models mostly based on specimens from mild steel. Information about high-strength steels is less available forWelded I-girders are used in many applications in steel construction, especially a tailored mixture of different plate thicknesses is difficult to manufacture by rolling. Residual stresses are mainly caused by welding and it is in most cases impractical to anneal the structures. Eurocode 3 (EC 3) does not provide any specific residual stress pattern. Hence, the decision for a particular problem has to be taken by the designer. Stability failures are often decisive in the design of steel beam and column members. Many standards, including EC 3, permit the use of non-linear FEA for the design of structures. Load influencing imperfections are mainly geometric deviations from the ideal shape and residual stresses(both due to assembly or weld manufacturing). Currently the residual stresses are considered by simplified “robust” procedures fixed in common standards(such as EC 3. Models mostly based on specimens from mild steel. Information about high-strength steels is less available for realistic assessment of residual stresses in full-scale I-girders. Hence, the scope of this work is the measurement of residual welding stresses on component-like I-girders S355 and S690 by sectioning method and global structural welding simulation.zeige mehrzeige weniger

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  • Launert_et_al - Measurement and numerical modeling of residual stress distribution in welded HSLA component-like I-girders.pdf
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Metadaten
Autor*innen:B. Launert
Koautor*innen:Michael Rhode, Arne Kromm, H. Pasternak, Thomas Kannengießer
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2016
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Load bearing capacity; Measurement; Numerical modeling; Residual stress; Welding
Veranstaltung:69th IIW Annual Assembly, Meeting of Subcommission II-A
Veranstaltungsort:Melbourne, Australia
Beginndatum der Veranstaltung:10.07.2016
Enddatum der Veranstaltung:15.07.2016
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:01.08.2016
Referierte Publikation:Nein
Eingeladener Vortrag:Nein
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