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Optimal control of induction heating for semi-solid metal forming

Hui Jiang, The Hung Nguyen and Michel Prud’homme

Technical Report (2005)

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Cite this document: Jiang, H., Nguyen, T. H. & Prud’homme, M. (2005). Optimal control of induction heating for semi-solid metal forming (Technical Report n° EPM-RT-2005-07).
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Abstract

Thixoforming technique requires heating the feedstock to a semi-solid state with a uniform temperature distribution, a uniform globular microstructure and an optimum liquid fraction. The skin effect of induction heating results in an exponential heat source (power density) profile within the semi-solid material. In this study, the conjugate gradient method in conjunction with the adjoint method is used to find a heating process to achieve a uniform temperature distribution along the radius of a cylinder in a relatively short time. It is found that a modified CGM may provide a satisfactory heating strategy. The physical and mathematical models take into account the temperature-dependent thermophysical properties. Radiative and convective heat losses and different heating frequencies are also considered.

Open Access document in PolyPublie
Subjects: 2100 Génie mécanique > 2100 Génie mécanique
2100 Génie mécanique > 2103 Plasticité, fluage
Department: Département de génie mécanique
Research Center: Non applicable
Date Deposited: 13 Jun 2018 15:56
Last Modified: 24 Oct 2018 16:13
PolyPublie URL: https://publications.polymtl.ca/3146/

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