On The Formulation Of Thermo-mechanical Contact For Casting Analysis
Author(s)
M. Chiumenti, M. Cewera and C. Agelet de Saracibar
Abstract
On the formulation of thermo-mechanical
contact for casting analysis
M. Chiurnenti, M. Cervera and C. Agelet de Saracibar
E. T.S. lngenieros de Caminos, Canales y Puertos, Universidad Politicnica de
CataluAa UPC, Barcelona, Spain
Abstract
This paper deals with a numerical formulation of coupled thermo-mechanical
contact for casting analysis. The final goal is to get an accurate, efficient and
robust contact model, allowing the numerical simulation of solidification
processes in the metal casting industry. Different algorithms to deal with the
mechanical constraints induced by contact such as penalty, augmented
lagrangian or a novel block-iterative solution are compared. A heat conduction
model depending on both temperature field and contact pressure has been
considered. Furthermore, the isolating influence of the air-gap between the cast
and the mould has been taken into account for the definition of the convection
heat transfer. The different alternatives have been implemented into the finite
Keywords
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