Numerical Simulation of the Temperature Distribution during the Metal Laser Sintering of Parts

Abstract:

The Metal Laser Sintering (MLS) process has been developed over the last decade to produce 3D parts from CAD files using metal powders. A considerable amount of research has been conducted into the melting and solidifying process of metal powders, mainly to predict the temperature distribution in a single metal powder layer or a few layers. The temperature and thermal residual stress distribution in real parts built using MLS has rarely been reported. Finite element simulations of temperature distributions in metal powders and parts requires huge computing resources, this is the main obstacle to successfully predicting temperature and thermal stress distributions in MLS parts. However, from the numerical results in this paper, the periodic nature of temperature distributions in parts around the laser spot can be used to simplify the numerical simulation process to achieve the prediction of temperature and thermal stresses distributions in parts built by MLS.

• Periodical: Applied Mechanics and Materials (Volumes 16-19)
• Pages: 475-479
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.16-19.475
• Online since: October 2009
• Authors: Chang J. Wang, Ibiye A. Roberts, Diane J. Mynors
• Keywords: Finite Element Model (FEM), Metal Laser Sintering, Temperature Distribution

References

[1] EOSINT M270, http: /www. eos. info/en/products/metal-laser-sintering. html.

[2] P. Fischer, M. Locher, V. Romano, H.P. Weber, S. Kolossov and R. Glardon: International Journal of Machine Tools and Manufacture, Vol. 44, (2004), pp.1293-1296.

DOI: 10.1016/j.ijmachtools.2004.04.019

[3] R.B. Patil and V. Yadava: International Journal of Machine Tools and Manufacture, Vol. 47, (2007), pp.1069-1080.

[4] S. Koric and B.G. Thomas: J. of Mat. of Processing Tech., Vol. 197 (1-3) (2008), pp.408-418.

[5] K. Osakada and M. Shiomi: International Journal of Machine Tools and Manufacture, Vol. 46(11), (2006), pp.1188-1193.

[6] M. Matsumoto, M. Shiomi, K. Osakada and F. Abe: International Journal of Machine Tools and Manufacture, Vol. 42 (1), (2002), pp.61-67.

[7] S. Kolossov, E. Boillat, R. Glardon, P. Fischer and M. Locher: International Journal of Machine Tools and Manufacture, Vol. 44, (2004), pp.117-123.

DOI: 10.1016/j.ijmachtools.2003.10.019

[8] B. Xiao and Y. Zhang, Journal of Physics D: Applied Physics, Vol. 40, (2007), pp.6725-6734.

[9] M. van Elsen, F. Al-bender and J. Kruth: Rapid Prototyping Journal, Vol. 40, (2008), pp.15-22.

[10] K.C. Mills: Recommended Values of Thermophysical Properties for Selected Commercial Alloys, Woodhead Publishing Ltd, Cambridge, (2002).

[11] A.V. Gusarov, I. Yadroitsev, P. Bertrand, and I. Smurov: Applied Surface Science, (2007).

[12] ANSYS, http: /www. ansys. com.