Numerical modelling of the laser cladding process using a dynamic mesh approach

• Autorzy: Amara E. H. , Hamadi F. , Achab L. , Boumia O.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this paper, a tridimensional modelling of laser cladding by powder injection is developed. Design/methodology/approach: In our approach, the task consists in the numerical resolution of the governing equations including heat transfer and flow dynamic assuming an unsteady state. The related differential equations are discretized using the finite volume method, allowing to obtain an algebraic set of equations. the clad formation is simulated by considering the finite volume mesh deformation. Findings: The shape of the deposited layer is determined as a function of the operating parameters related to the laser beam, the powder, the sample, and the environing atmosphere. Research limitations/implications: By including as much as possible of terms describing physical mechanisms in the general form of the equations, one can model more accurately the cladding process. Afterwards, a validation with experimental results must be done. Practical implications: The comprehension of the occurring physical processes would allow the enhancing of the products quality, the process can then be optimized since predictions on the results to be obtained can be made for given operating parameters. Originality/value: In our contribution, the introduction of the dynamic mesh method involving the use of user defined functions (UDF) in the calculation procedure, have allowed to follow the variation of the cells volume and then to obtain the clad profiles as a function of the operating parameters.

Słowa kluczowe

EN

numerical techniques; laser cladding; 3D modelling; finite volume method; dynamic mesh

PL

techniki numeryczne; napawanie laserowe; modelowanie 3D; metoda objętości skończonych; siatka dynamiczna

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 15, nr 1-2
• Strony: 100--106
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Amara E. H.

• Laser Material Processing Group Centre for Development of Advanced Technologies-CDTA, Po. Box 17, Baba-Hassen, Algiers, Algeria

autor

Hamadi F.

• Laser Material Processing Group Centre for Development of Advanced Technologies-CDTA, Po. Box 17, Baba-Hassen, Algiers, Algeria

autor

Achab L.

• Laser Material Processing Group Centre for Development of Advanced Technologies-CDTA, Po. Box 17, Baba-Hassen, Algiers, Algeria

autor

Boumia O.

• Laser Material Processing Group Centre for Development of Advanced Technologies-CDTA, Po. Box 17, Baba-Hassen, Algiers, Algeria

Bibliografia

• [1] B. Brenner, W. Reitzenstein, Laser Hardening of Turbine Blades, Industrial Laser Review, 1996.
• [2] N.Q. Wu, C. Xia, M. Li, N. Perrusquiva, S.X. Mao, J. Eng. Mat. Tech., Vol.126, (2004) 8-13.
• [3] L.Cunha, M. Andritshky, L. Rebouta, F. Vaz, Proc. 5th Int. Sci. Conf AMME’96, Poland (1996).
• [4] I. Schäffler, P. Geyer, P. Bouffioux, P. Delobelle, J. Eng. Mat. Tech., Vol.122, (2000) 168-176.
• [5] E.A.Werner,V.V. Siberschmidt, H.J. Böhm, J. Eng. Mat. Tech., Vol.125, (2003) 1-1.
• [6] K. Komvopoulos, K. Nagarathnam, J. Eng. Mat. Tech., Vol.112 (1990) 131-143.
• [7] S. Barnes, M.J. Nash, Y.K. Kwok, J. Eng. Mat. Tech., Vol.125, (2003) 327-377.
• [8] S. Atamert, H.K.D.H. Bhadeshia, Metall. Trans. A, Vol. 20A, (1989) 1037-1054.
• [9] L. Börjesson, L.E. Lindgren, J. Eng. Mat. Tech., Vol.123, (2001) 106-111.
• [10] G. Cai,, G.Molino, Proc. Laser-6, (1990) 79-90.
• [11] B. Grünenwald, Proc. ECLAT '92, (1992) 411-416.
• [12] J.A. Folkes, K. Shibata, J. of Laser Applications, Vol. 6, (1994) 88-94
• [13] G. Stern, Proc. ECLAT '90, (1990) 25.
• [14] J. Li, L. Yuan, Lasers in Engineering, Vol. 2, (1994) 239-245.
• [15] S. Finnie, W. Cheng, I. Finnie, J.M. Drezet, M. Gremaud, J. Eng. Mat. Tech., Vol.125, (2003) 302-308.
• [16] M. Mochizuki, M. Hayashi, T. Hattori, J. Eng. Mat. Tech., 122, (2000) 98-105.
• [17] C. Lampa, A.F.H. Kaplan, M. Resch, C. Magnusson, Lasers in Engeneering, Vol.7 (1998) 241-252.
• [18] S. V. Patankar, D.B. Spalding, Int. J.of Heat and Mass Transfer, Vol.15, (1972) 1787
• [19] www.fluent.com
• [20] L. Yang, X. Peng, B. Wang, International Journal of Heat and Mass Transfer, Vol. 44 (1986) 4465.
• [21] M. Picasso, C.F. Marsden, J.D. Wagniere, A. Frenk, M. Rappaz, Metallurgical and Materials Transactions B, Vol. 25 (1994) 281-291.
• [22] E. Toyerskani, A. Khajepour, S. Corbin, ICALEO Proc., Scottsdale, Arizona, USA (2002).
• [23] W.W. Duley, CO2 Lasers: Effects and Applications, Acad. Press, New York , 1976.