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Ultimate Strength Capacity of Welded Joints in High Strength Steels
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0003-4180-4710
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. Cargotec Sweden AB.
2017 (English)In: 2nd International Conference on Structural Integrity, ICSI 2017 / [ed] Iacoviello, F Moreira, PMGP Tavares, PJS, Elsevier, 2017, Vol. 5, p. 1401-1408Conference paper, Published paper (Refereed)
Abstract [en]

High strength steels are nowadays used in a wide range of weight lifting applications, e.g. spreaders and cranes, where there is a demand on lightweight design of these structures with increased structural performance where the welds become more sensitive to failure. This study focuses on investigating the influence of the mismatch in the yield strength of the weld filler material and the welds penetration depth on the ultimate strength capacity and failure modes of butt and fillet welded high strength steels of yield strength in the range of 350 960 MPa. The load carrying capacities of these mentioned joints are evaluated with experiments and compared with the estimations by finite element analysis (FEA), and design rules in Eurocode 3 and American Welding Society Code AWS D1.1. Fully penetrated joint with under-matched filler material is more ductile and the ultimate strength capacity of base plate can be achieved. It is observed that joints with under-matched filler material are more sensitive to penetration ratio. This influence is more pronounced in joints in S960 steel welded with under-matched filler material. It is also found that the design rules in Eurocode3 (valid for design of welded joints in steels of grade up to S700) can be extended to designing of welds in S960 steels using correlation factor of one.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 5, p. 1401-1408
Series
Procedia Structural Integrity, ISSN 2452-3216 ; 5
Keywords [en]
High Strength Steels, Welded Joints, Ultimate Strength, Failure
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:kth:diva-221408DOI: 10.1016/j.prostr.2017.07.204ISI: 000419177800188OAI: oai:DiVA.org:kth-221408DiVA, id: diva2:1174953
Conference
2nd International Conference on Structural Integrity (ICSI), SEP 04-07, 2017, Funchal, Portugal
Note

QC 20180117

Available from: 2018-01-17 Created: 2018-01-17 Last updated: 2018-01-29Bibliographically approved

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Barsoum, ZuheirKhurshid, Mansoor

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