3D Finite Element Modeling of the Welding Process Using Element Birth and Element Movement Techniques

2002 ◽  
Author(s):  
Ihab F. Z. Fanous ◽  
Maher Y. A. Younan ◽  
Abdalla S. Wifi
Keyword(s):  
Finite Element ◽  
Modeling And Simulation ◽  
Welding Process ◽  
Metal Deposition ◽  
Main Concern ◽  
3D Analysis ◽  
3D Finite Element ◽  
Fast Computer ◽  
A New Technique ◽  
Element Movement

The modeling and simulation of the welding process has been of main concern for different fields of applications. Most of the modeling of such a problem has been mainly in 2D forms that may also include many sorts of approximation and assumptions. This is due to limitations in the computational facilities as the analysis of 3D problems consumes a lot of time. With the evolution of new finite element tools and fast computer systems, the analysis of such problems is becoming in hand. In this research, a simulation of the welding process with and without metal deposition is developed. Change of phase and variation of properties with temperature are taken into account. A new technique for metal deposition using element movement is introduced. It helps in performing full 3D analysis in a shorter time than other previously developed techniques such as the element birth.

3-D Finite Element Modeling of the Welding Process Using Element Birth and Element Movement Techniques

2003 ◽  
Vol 125 (2) ◽  
pp. 144-150 ◽  
Author(s):  
Ihab F. Z. Fanous ◽  
Maher Y. A. Younan ◽  
Abdalla S. Wifi
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Modeling And Simulation ◽  
Welding Process ◽  
Metal Deposition ◽  
Main Concern ◽  
Element Modeling ◽  
Fast Computer ◽  
A New Technique ◽  
Element Movement

The modeling and simulation of the welding process has been of main concern for different fields of applications. Most of the modeling of such a problem has been mainly in 2-D forms that may also include many sorts of approximation and assumptions. This is due to limitations in the computational facilities as the analysis of 3-D problems consumes a lot of time. With the evolution of new finite element tools and fast computer systems, the analysis of such problems is becoming in hand. In this research, a simulation of the welding process with and without metal deposition is developed. A new technique for metal deposition using element movement is introduced. It helps in performing full 3-D analysis in a shorter time than other previously developed techniques such as the element birth.

Study of the Effect of Boundary Conditions on Residual Stresses in Welding Using Element Birth and Element Movement Techniques

2003 ◽  
Author(s):  
Ihab F. Z. Fanous ◽  
Maher Y. A. Younan ◽  
Abdalla S. Wifi
Keyword(s):  
Finite Element ◽  
Residual Stresses ◽  
Boundary Conditions ◽  
Welding Process ◽  
Computation Time ◽  
3D Models ◽  
The Other ◽  
3D Analysis ◽  
The Media ◽  
Element Movement

The structure in which the welding process is performed highly affects the residual stresses generated in the welding. This effect is simulated by choosing the appropriate boundary conditions in modeling the welding process. The major parameters of the boundary conditions are the method by which the base metal is being fixed and the amount of heat being applied through the torch. Other parameters may include the coefficients of thermal heat loss from the plate which may simulate the media in which the welding is taking place. In modeling 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 development of new finite element tools, namely the element movement technique developed by the authors, full 3D analysis of the welding process is becoming in hand. In the present work, three different boundary conditions shall be modeled companng their effect on the welding. These boundary conditions shall be applied to two models of the welding process: one using the element birth technique and the other using the element movement technique showing the similarity in their responses verifying the effectiveness of the latter being accomplished in a shorter time.

scholarly journals 3D finite element modeling of a permanent magnet linear actuator

2008 ◽  
Vol 5 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Ivan Yatchev ◽  
Nikolina Ilieva ◽  
Krastyo Hinov
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Permanent Magnets ◽  
Magnetic Flux Density ◽  
Linear Actuator ◽  
3D Analysis ◽  
Magnetostatic Field ◽  
Magnetomotive Force ◽  
3D Finite Element

The magnetostatic field and electromagnetic force of a linear actuator with a fixed permanent magnet and soft magnetic mover was studied using the 3D finite element method. The actuator construction is such that its field can be modeled adequately only using 3D analysis. Results were obtained for the magnetic flux density distribution and the electromagnetic force for different positions of the mover for two values of the coil magnetomotive force and two types of permanent magnets.

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