Open AccessSIMULATION OF THE STRESSED-DEFORMED STATE OF A RING WELDED CONNECTION WITH LACK OF FUSION
Author(s) -
Л. М. Гуревич,
В. Ф. Даненко,
A. A. Istrati
Publication year - 2020
Publication title -
izvestiâ volgogradskogo gosudarstvennogo tehničeskogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 1990-5297
DOI - 10.35211/1990-5297-2020-6-241-46-52
Subject(s) - welding , materials science , joint (building) , tension (geology) , stress (linguistics) , structural engineering , base metal , fusion , composite material , ring (chemistry) , compression (physics) , engineering , chemistry , linguistics , philosophy , organic chemistry
Computer modeling of changes in stresses and strains under axial tension of pipes with a ring mechanically inhomogeneous welded joint was carried out. Annular mechanically inhomogeneous welded joint had an different mechanical properties of the joint, heat-affected zone and base metal. A defect of the type of lack of fusion of various geometric sizes is present in the welded joint. The maximum stresses during axial tension develop in the zone of lack of penetration, which is a stress concentrator. The stress concentration values for various extent of the defect are determined. The distribution of stresses and strains in welds at various defect values is investigated.