Calculation of Thermal Processes around Moving Molten Pool Using Boundary Element Method


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Abstract—A technique for the calculation of the steady-state temperature field in a solid part of a welded workpiece has been developed by using a moving weld pool size as input data and a boundary element method for solving the heat conduction problem. The technique allows one to calculate the effective power and thermal efficiency of a heat source. An example of a through-penetration arc welding with a tungsten electrode for the case of a 4-mm-thick aluminum alloy 1565chMU reveals the temperature gradient distributions and cooling rate at the pool boundary. A good agreement is observed between the calculated and experimental thermal cycles. The distribution of hardness in the cross section of a butt weld is presented.

Sobre autores

V. Karkhin

St. Petersburg Polytechnic University

Autor responsável pela correspondência
Email: victor.karkhin@mail.ru
Rússia, St. Petersburg, 195251

P. Khomich

St. Petersburg Polytechnic University

Email: victor.karkhin@mail.ru
Rússia, St. Petersburg, 195251

O. Panchenko

St. Petersburg Polytechnic University

Email: victor.karkhin@mail.ru
Rússia, St. Petersburg, 195251

S. Ivanov

St. Petersburg Polytechnic University

Email: victor.karkhin@mail.ru
Rússia, St. Petersburg, 195251

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