Gradient method of cast iron latent heat identification

• Autorzy: Majchrzak E. , Mendakiewicz J.
• Języki publikacji: EN

Abstrakty

EN

In the paper the cast iron latent heat in the form of three components corresponding to solidification of austenite and eutectic phases is identified. The basic information concerning the form of adequate functions approximation has been taken on the basis of cooling curve and temperature derivative courses found by means of the TDA technique. On the stage of inverse problem solution the gradient method has been used. The numerical computations have been done using the finite difference method. In the final part of the paper the example of latent heat identification is shown.

Słowa kluczowe

EN

foundry industry; solidification process; numerical techniques; inverse problem; gradient methods; identification of latent heat

PL

przemysł odlewniczy; krzepnięcie; metody gradientowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 4
• Strony: 121--126
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Majchrzak E.

autor

Mendakiewicz J.

• Silesian University of Technology, Department for Strength of Materials and Computational Mechanics, Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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• [2] E.Majchrzak, B.Mochnacki, Identification of thermal properties of the system casting - mould, Materials Science Forum 539-543 (2007) 2491-2496.
• [3] S.Lara, R.Szopa, Model of cast iron solidification using the artificial mushy zone approach, Archives of Foundry, 6, 22 (2006) 292-297.
• [4] K.Kurpisz, A.J.Nowak, Inverse Thermal Problems, Computational Mechanics Publications, Southampton-Boston, 1995.
• [5] R.Szopa, Sensitivity analysis and inverse problems in the thermal theory of foundry, Publ. of the Czest. Univ. of Techn., Czestochowa, 2006 (in Polish).
• [6] B.Mochnacki, J.S.Suchy, Identification of alloy latent heat on the basis of mould temperature (Part 1), Archives of Foundry 6, 22 (2006) 324-330.
• [7] B.Mochnacki, E.Pawlak, J.S.Suchy, Identification of alloy latent heat on the basis of mould temperature (Part 2), Archives of Foundry, 6, 22 (2006) 331-337.
• [8] E.Majchrzak, J.Mendakiewicz, Identification of cast iron substitute thermal capacity, Archives of Foundry,6, 22 (2006) 310-315.
• [9] J.Mendakiewicz, Influence of choice of cast iron substitute thermal capacity on the results of numerical computations, Archives of Foundry, 6, 22 (2006) 310-315 (in Polish).
• [10] R.Szopa, The parametric sensitivity analysis of solidification process, Archives of Foundry 5, 15 (2005) 395-404.
• [11] M.Kleiber, Parameter sensitivity, J.Wiley & Sons Ltd., Chichester, 1997.
• [12] K.Dems, B.Rousselet, Sensitivity analysis for transient heat conduction in a solid body, Structural Optimisation, 17 (1999), 36-45.