Premium
The thermal history of a composite cylinder girth welded by TIG
Author(s) -
Grill A.
Publication year - 1982
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620180707
Subject(s) - welding , cylinder , gas tungsten arc welding , materials science , arc (geometry) , thermal , arc welding , heat transfer , mechanics , thermal radiation , composite number , radius , composite material , thermodynamics , mathematics , physics , geometry , computer science , computer security
A mathematical model for the calculation of the three‐dimensional thermal history of a composite cylinder, during girth welding by the TIG method, is presented. The solution is obtained by the alternating direction implicit finite difference method. The model takes into consideration the distribution of the heat input from the welding arc, the heat losses from the cylinder by radiation and convection, the dependence of the physical properties of the metal on the temperature and the solid‐liquid phase transformation. The effects of the efficiency coefficient of the welding arc, of the effective arc radius and of heat transfer coefficients on the thermal history are presented.