Finite Element Simulation Modelling for Laser Irradiated Bending Process of DP980 Steel

Abstract:

Laser forming involves heating sheet metal workpiece along a certain path with a defocused laser beam directed irradiate to the surface. During laser forming, a transient temperature fields is caused by the irradiation and travelling of a laser beam. Consequently, thermal expansion and contraction take place, and allows the thermal-mechanical forming of complex shapes. This is a new manufacturing technique that forming metal sheet only by thermal stress. Therefore, the analysis of temperature fields and stress fields are very useful for studying the forming mechanism and controlling the accuracy of laser forming. The non-liner finite element solver, ABAQUS, is employed to solve the thermal-mechanical analysis. Using this model, the temperature and stress distribution of DP980 are analyzed. Numerical results agree well with the experimental results.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1878-1882
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1878
• Online since: June 2012
• Authors: Jung Han Song, Jong Sup Lee, Geun An Lee, Sung Jun Park
• Keywords: FEM Simulation, Laser Forming, Temperature Field, Thermal-Mechanical Elasto-Palstic Analysis

References

[1] W. Li, Y. L.Yao, Numerical and experimental investigation of convex laser forming process, ASME Trans. J. of Manufacturing Science and Engineering 123 (2002) 73-81.

[2] A.K. Kyrsanidi, T.B. Kermanidis and S.G. Pantelakis, An analytical model for the prediction of distortions caused by the laser forming process, J. Mater. Process. Technol. 104 (2000) 94-102.

DOI: 10.1016/s0924-0136(00)00520-3

[3] F. Vollertsen, M. Geiger and W. Li, FDM and FEM Simulation of laser forming: A Comparative Study, Proc. of 4th Int. Conf. on Technology of plasticity (1993), 1793-1798.

[4] F. Vollertsen, An Analytical Model for Laser Bending, Lasers in Eng. 2 (1994) 261-276.

[5] F. Vollertsen, Mechanism and Models for Laser Forming, Proc. of Laser assisted Net shape Eng. (1994) 1345-1359.

[6] A. K. Kyrsanidi, T. B. Kermanidis, and S. G. Pantelkis, Numerical and Experimental Investigation of the Laser forming process, Journal of Materials Processing Technology 87 (1999) 281-290.

DOI: 10.1016/s0924-0136(98)00367-7

[7] H. Shen, Z.Q. Yao, Y.J. Shi, J. Hu, Ananalytical formula for estimating the bending angle by laser forming, Proc. Inst Mech Eng Part C:J. Mech.Eng. Sci. 220 (2006) 243–247.

[8] H. Shen, J. Hu, Z. Yao, Analysis and control of edge effects in laser bending, Optics and Lasers in Engineering 48 (2010) 305-315.

DOI: 10.1016/j.optlaseng.2009.11.005