An Initiative Plan of the Equivalent Model for Simulation of the Welding Process

Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

مقاله 1، دوره 1، شماره 3، آذر 2008، صفحه 1-16   

نوع مقاله: Persian

نویسندگان

Ali Heidari^{* 1}؛ Mohammad Reza Forouzan²؛ Jafar Golestaneh³

¹- Lecturer, Mechanical Engineering Faculty, Islamic Azad University, Khomeinishahr Branch

²Assistant Professor, Mechanical Engineering Faculty, Isfahan University of Technology

³M.Sc., Sadid Pipe and Equipment Co., Tehran

چکیده

Many researchers content themselves with the 2D simulation of welding process instead of the 3D simulation, because of the time and the cost factors of the latter. In this research, the number of elements and nodes are reduced by an initiative plan (defining an equivalent model) for the simulation of welding. The welding process has been simulated by an uncoupled thermal-mechanical finite element model in three steps. Thermal history was determined from thermal analysis, and then the distribution of the metallurgical phase on the fusion and heat affected zones were calculated by a certain code. Afterward, the stress distribution was computed from mechanical analysis, where the material property was defined element by element according to the second step. One of the most important objectives of this simulation is to study the residual stresses of welding. Comparisons between the thermal analysis results and the metallographic and laboratory results of this research show acceptable accuracy of the proposed method.

کلیدواژه‌ها

Welding Process؛ Finite Element Method؛ Equivalent Model؛ Residual stress

مراجع

 [1] Taljat, B., Radhakrishnan, B., Zacharia, T., Numerical Analysis of GTA Welding Process with emphasis on Post-Solidification Phase Transforma-tion effects on Residual Stresses, Materials Science and Engineering, Vol. A246, 1998, pp. 45–54.

[2] Mackerle, J., Finite Element Analysis and Simulation of Welding: a Bibliography (1976-1996), Modeling and Simulation in Materials Science and Engineering, Vol. 4, 1996, pp. 501-533.

[3] Mackerle, J., Finite Element Analysis and Simulation of Welding-an Addendum: a Bibliography (1996-2001), Modeling and Simulation in Materials Science and Engineering, Vol. 10, 2002, pp. 295-318.

[4] Andersson, B. A. B., Thermal Stresses in a Submerged-Arc Welded Joint Considering Phase Transformations, Transactions of the ASME, Vol. 100, 1978, pp. 356-362.

[5] Goldak, J., Chakravarti, A., Bibby, M., A new finite element model for welding heat sources, Metallurgical Transactions B, Vol. 15B, 1984, pp. 299-305.

[6] Roelens, J.B., Numerical simulation of some multipass submerged arc welding determination of the residual stresses and comparison with experimental measurements, Welding in the world, Vol.35, No.2, 1995, pp. 17-24.

[7] Wen, S. W., Hilton, P., Farrugia, D. C. J., Finite Element Modeling of a Submerged Arc Welding Process, Journal of Materials Processing Technology, Vol. 119, 2001, pp. 203-209.

[8] Cho, S. H., Kim, J. W., Analysis of Residual Stress in Carbon Steel Weldment incorporating Phase Transformations, Science and Technology of Welding and Joining, Vol. 7, No. 4, 2002, pp. 212-216.

[9] Chang P. H., Teng, T. L., Numerical and Experimental Investigations on the Residual Stresses of the Butt-Welded Joints, Computational Materials Science, Vol. 29, 2004, pp. 511–522.

[10] Yajiang, L., Juan, W., Maoai, C., Xiaoqin, S., Finite Element Analysis of Residual Stress in the Welded Zone of a High Strength Steel, Bull. Mater. Sci., Vol. 27, No. 2, 2004, pp. 127–132.

[11] حیدری، ع.، شبیه‌سازی ترکیبی فرایندهای جوشکاری، هایدروتست و کوئنچینگ لوله‌ها به منظور بررسی تنش‌های پسماند به کمک روش اجزاء محدود، پایان نامه کارشناسی ارشد، دانشکده مهندسی مکانیک، دانشگاه صنعتی اصفهان، 1385.

[12] Gery, D., Long, H., Maropoulos, P., Effects of Welding Speed, Energy Input and Heat Source Distribution on Temperature Variations in Butt Joint Welding, Journal of Materials Processing Technology, 2005.

[13] Rammerstorfer, F.G., Fisher, D.F., On Thermo-Elastic-Plastic Analysis of Heat-Treatment Process Including Creep and Phase Changes, Computers and Structures, Vol. 13, 1981, pp. 771-779.

[14] Lundback, A., CAD-support for heat input in FE-model, Computer Aided Design, Lulea University of Technology, Sweden, 2003.

[15] Alberg, H., Material modeling for simulation of heat treatment, Division of Computer Aided Design, M.S. Thesis, Lulea University of Technology, 2003.

[16] Kamamato, S., Nihimori, T., Kinoshita S., Analysis of Residual Stress and Distortion Resulting from Quenching in Large low-alloy Steel Shafts, Journal of Mechanical Science and Technology, 1985,  pp.798-804.