The modeling and simulation of the welding process has been of main concern for different fields of applications. It is used mainly to check for the residual stresses generated due to welding. These stresses may reach a value near the yielding level and may cause several failure types in the welded strnctures. Several attempts have been clone in analyzing the welding process using different approaches. Analytical methods have been developed with many approximations and assumptions to handle the highly non-linear behavior of the problem. On the other hand, experimental methods in monitoring the residual stresses in a welded structure may require destructive procedure to install several gages at several critical points which might not be possible for some cases. The numerical simulation using finite elements of the welding process was an important solution to account for the different parameters of the welding process. 2D forms of approximation were developed in analyzing most of the models of such problem. 3D models analyzing the welding process were developed in limited applications due to its high computation time and cost. With the evolution of new finite element tools and fast computer systems, full 3D analysis of the welding process is becoming in hand. In the present work, models of the welding process with and without metal deposition of filler material are developed. The simulation includes the moving heat source, temperature dependant material properties, phase and state change, and coupled displacement-temperature analysis. Initially, a model is developed simulating the welding process in a previous research that does not include filler material addition to validate the model of the moving heat source, the temperature dependant material properties, an
School of Sciences and Engineering
Date of Award
Online Submission Date
Maher Y.A. Younan
Committee Member 1
Hesham Sobhi Sayed
Committee Member 2
Medhat A. Haroun
Committee Member 3
Ezzat H. Fahmy
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(2002).3D finite element modeling of the welding process [Thesis, the American University in Cairo]. AUC Knowledge Fountain.
Zakaria, Ihab Fanous. 3D finite element modeling of the welding process. 2002. American University in Cairo, Thesis. AUC Knowledge Fountain.
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