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Use of Shell Elements for the FEM-Simulation of the Welding Process of Sheet Metal Parts

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Abstract:

During the joining process of complex body components in the automobile industry, dimensional accuracy is essential. In order to predict the behavior and to improve the geometrical quality of joined sheet metal parts during the welding and cooling process, a simulation method by means of finite elements is applied. This should be done in the early stage of the product’s life cycle to reduce process adjustments, which are time and money consuming. In recent years the simulation of welding was basically feasible by models consisting of volume elements. This way the metallurgical phase transformation, which is responsible for the behavior of the treated parts during the cooling process, can be established for a specific material. The use of volumes has a negative influence on the calculation time and it is not applicable for sheet metals. Especially, if effects from previous forming processes are to be considered. Additionally, the application of shells can meet the requirements of an analysis of the effects of welding when the metallurgical material properties are taken into account. In this paper an example of a sheet metal (DC04, former St 14) will be examined with the aid of a finite element analysis. Firstly, a transient temperature field is calculated in a thermal simulation by applying a certain method. In this calculation only the thermal properties of the material are used. Secondly, the transient temperature field is used as the initial load for the thermo-mechanical analysis. The distortion and the residual stresses of the work piece can be calculated using thermo-mechanical properties and material phase transformations.

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Periodical:

Advanced Materials Research (Volumes 6-8)

Pages:

209-216

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.6-8.209

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Cite this paper

Online since:

May 2005

Authors:

Michael F. Zaeh, L. Papadakis, Sven Roeren, T. Hornfeck

Keywords:

Finite Element Model (FEM), Thermal Effect, Welding

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] F. Rick: Simulationsgestützte Gestaltung von Produkt und Prozess am Beispiel Laserstrahlschweißen (Dissertation, Technische Universität München 2001), pp.47-49.

Google Scholar

[2] M. F. Zaeh, F. Auer and S. Roeren: Modelling the Process Chain ´Forming - Laser Beam Welding´ by means of FEM-Simulation (2nd WLT-Conference, Munich 2003).

DOI: 10.1109/cleoe.2003.1313627

Google Scholar

[3] D. Radaj: Eigenspannung und Verzug beim Schweißen: Rechnen- und Messverfahren (DVSVerl., Duesseldorf 2002), p.117.

Google Scholar

[4] J. M. McDill, K. H. Runnemalm and A. S. Oddy: An 8- to 16-node solid graded shell element for far field applications in 3D thermal-mechanical FEA (J. of Mathematical Modelling and Scientific Computating).

Google Scholar

[5] M. Nässtrom, L. Wikander, L. Karlsson, L. E. Lindgren and J. Goldak: Combined 3D and shell modelling of welding. Mechanical Effects of Welding (IUTAM Symposium, Luleå/Sweden 1992, Mechanical Effects of Welding, Springer-Verlag, Berlin 1992).

DOI: 10.1007/978-3-642-84731-8_20

Google Scholar

[6] M. Gu and J. Goldak: Mixing thermal shell and brick elements in fea of welds (Proc. 10th Int. Conf. on Offshore Mechanics and Arctic Engrg, Bd. 3A, 1991), pp.1-6.

Google Scholar

[7] K. J. Bathe: Finite-Element-Methoden (Springer-Verlag, Berlin 1986).

Google Scholar

[8] D. Brinkmann, A. Deflorio and A. Moritz: Use of Remeshing Routines and Viscoplastic Material Laws in Welding Simulation (20th CAD-FEM Users' Meeting, Friedrichshafen 2002).

Google Scholar

[9] SYSWELD: Metallurgical Transformation Model - LSG2M Nancy (2004).

Google Scholar

[10] J. Wang, C. Chen and F. Ding: Research on Welding Stress during Phase Transformation (IUTAM Symposium, Luleå/Sweden 1992, Mechanical Effects of Welding, Springer-Verlag, Berlin 1992).

DOI: 10.1007/978-3-642-84731-8_3

Google Scholar

[11] C. Schenk: Ergebnisse der transienten Schweißsimulation mit SYSWELD (4. Sitzung Arbeitsgruppe Schweißprozess-Simulation, VW-Konzern, Ingolstadt 2004).

Google Scholar

[12] H. Ziegler: An introduction to thermomechanics (Amsterdam: North-Holland 1977).

Google Scholar