2019 №04 (01) DOI of Article
2019 №04 (03)

The Paton Welding Journal 2019 #04
TPWJ, 2019, #4, 5-10 pages
Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #4, 2019 (April)
Pages                      5-10

Stress concentration in butt welded joints with reinforcement from one side (Review)

A.V. Moltasov, P.N. Tkach, I.G. Tkach and V.V. Verushkin
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The strength of parts and structural elements in the presence of welds largely depends on the design of their joints and assemblies. A sharp change of geometry in their vicinity causes the appearance of additional local stresses or their concentration. The value of these stresses depends on the structural shape of mating of separate elements. That is why they can affect the strength of welded structures in a different way. Stress concentration in the zone of transition from the weld to the base metal has a significant effect on joints fatigue resistance. At the elastic deformation, the theoretical stress concentration factor serves as a quantitative measure of stress concentration. It does not depend on properties of the material, and at a preset type of deformation its value is influenced only by geometry parameters of the stress concentrator, such as its shape and relative dimensions. In practice, the theoretical stress concentration factor is determined by approximate dependencies, as well as by analytical, experimental and numerical methods for investigation of stressed state. The description and analysis of these methods are the aim of the presented review. 37 Ref., 2 Figures.
Keywords: butt welded joint, reinforcement from one side, axial load, stressed state, tension, bending, stress concentration

Received:                22.01.19
Published:               16.05.19


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