التفاصيل البيبلوغرافية
| العنوان: |
COMPUTATIONAL EVALUATION OF THE INFLUENCE OF THE THICKNESS OF WELDED JOINTS OF AMG6 ALLOY ON THEIR STRESS-STRAIN STATE AFTER ELECTRODYNAMIC TREATMENT IN THE PROCESS OF WELDING. |
| المؤلفون: |
Lobanov, L. M., Pashchyn, M. O., Mikhodui, O. L., Todorovych, N. L., Sydorenko, Yu. M., Ustymenko, P. R. |
| المصدر: |
Paton Welding Journal; Apr2024, Issue 4, p11-17, 7p |
| مصطلحات موضوعية: |
WELDED joints, FUSION welding, WELDING, STRAINS & stresses (Mechanics), RESIDUAL stresses |
| People: |
EMBIID, Joel, 1994- |
| مستخلص: |
A calculated evaluation of the efficiency of electrodynamic treatment (EDT) effect on the stress state of butt-welded joints of plates of aluminium AMg6 alloy with an increase in their thickness d was carried out. Mathematical modelling of the kinetics and residual stress states of butt-welded joints d = 2, 4 and 8 mm was carried out as a result of their EDT at different values of temperature T of the plates, at which the treatment was performed. The value of the vertical velocity V0 of the electrode-indenter (EDT tool) was taken as V0 = 5 m/s, which corresponds to the modern electrophysical characteristics of the equipment for EDT. The values of T were set reflecting the conditions of EDT after welding (T = 20°C) and during fusion welding (T = 150 and 300 °C). The problem was solved in a three-dimensional formulation using the ANSYS softare. The conditions for the formation of stresses in the plates at EDT after and during welding were determined by the mechanical characteristics of AMg6 alloy at temperatures T = 20, 150, and 300 °C without taking cooling into account. The results of the computation of residual stresses in welded joints are presented. It is shown that at a value of T = 150 °C, EDT provides the most optimal residual stress states of the plates in the entire experimental range of d. It was proved that EDT in the welding process (at T = 150 °C) is more efficient compared to EDT of metal after cooling (T = 20 °C). It was established that at EDT of welded joints d = 2?4 mm, residual compressive stresses are formed over the entire thickness of the plates, the values of which are close to the yield strength of AMg6 alloy. At EDT of welded joints d = 8 mm, residual compressive stresses are formed on the outer surface of the plates, and on the back side -- tensile ones. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |