2017 №09 (08) |
DOI of Article 10.15407/as2017.09.09 |
2017 №09 (10) |

Avtomaticheskaya Svarka (Automatic Welding), #9, 2017, pp. 59-62

**Approximate calculation of radius of weld transition to base metal of welded butt joint according to normalized parameters**

**Authors**

**A.V. Moltasov**

E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03150, Kiev, Ukraine. E-mail: office@paton.kiev.ua

**Abstract**

The aim of the present work was to establish mathematical dependencies between geometric parameters of welded bead, taken into account the stress concentration factor in welded butt joints and standard parameters of height and width of weld reinforcement during calculation. It was suggested to describe fillets and a convex part of the reinforcement of a welded butt joint in the form of arcs of contacting circumferences, which allowed establishing the functional relation between the side angle and the height-to-width ratio of the reinforcement. Using this relation, the values of the height-to-width ratio of the reinforcement and the values of radius of weld transition to base metal, corresponding to them, were determined on the basis of the known dependences of this radius on the side angle for different types of fusion welding. By plotting the regression dependencies using the computer-aided design system MathCad, the mathematical formulas were obtained to determine the radius of weld transition to base metal through the height-to-width ratio of the butt welded joint produced by submerged arc welding and welding in shielding gases. 13 Ref., 3 Tables, 3 Figures.

**Keywords:**welded butt joint, stress concentration, weld geometry, radius of weld transition to base metal, side angle, normalized parameters, approximate calculation

Received: 17.05.17

Published: 10.10.17

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