1. Comparison of numerical simulation models for predicting temperature in solidification analysis with reference to air gap formation
- Author
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Björn Pustal, Michel Bellet, Andreas Ludwig, Joachim Wendt, Hasse Fredriksson, J. Kron, Royal Institute of Technology [Stockholm] (KTH ), Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Department of Metallurgy, University of Leoben (MU), Foundry Institute, Aachen University of Technology, Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), VTT Industrial Systems, and VTT Technical Research Centre of Finland (VTT)
- Subjects
Materials science ,0211 other engineering and technologies ,Mechanical engineering ,02 engineering and technology ,Heat transfer coefficient ,medicine.disease_cause ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Mold ,medicine ,stress-strain analysis ,benchmark exercise ,021102 mining & metallurgy ,Computer simulation ,air gap formation ,Mechanical Engineering ,Metals and Alloys ,Stress–strain analysis ,numerical modelling ,021001 nanoscience & nanotechnology ,Finite element method ,Mechanics of Materials ,Heat transfer ,finite elements ,solidification ,0210 nano-technology ,Air gap (plumbing) ,coupled problems - Abstract
International audience; As a result of its influence on heat transfer between cast part and mould, air gap formation is an important problem for many casting processes. The general explanation for gap formation is that, as a result of stresses and distortions that are created from inhomogeneous cooling, shrinkage of the casting and expansion of the mould occur. In this paper, different thermomechanical approaches are applied to a well defined casting process using three commercial and one inhouse codes and their predictions are compared with experimental findings. The experimental data were obtained from the solidification and subsequent cooling of cylindrical castings of eutectic Al-13%Si and ternary Al-7%Si-0.3%Mg alloys. Based on these findings, the major differences between the predictions of the models and the actual formation of the air gap are discussed
- Published
- 2004
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