Thermomechanics of the cooling stage in casting processes: Three-dimensional finite element analysis and experimental validation |
| |
Authors: | M Bellet F Decultieux M Ménaï F Bay C Levaillant J -L Chenot P Schmidt I L Svensson |
| |
Affiliation: | 1. CEMEF-Materials Forming Center, Ecole des Mines de Paris, 06904, Sophia Antipolis, Cedex, France 2. The Commissariat à l’Energie Atomique, 91680, Bruyèresle-Chatel, France 3. The Transvalor Company, 06904, Sophia Antipolis, Cedex, France 4. Materials Center, Ecole des Mines d’Albi-Carmaux, 81013, Albi, France 5. Volvo Company, 40508, G?teborg, Sweden 6. The Royal Institute of Technology, 10044, Stockholm, Sweden
|
| |
Abstract: | A thermomechanical three-dimensional (3-D) finite element analysis of solidification is presented. The heat transfer model is based on a multidomain analysis accounting for noncoincident meshes for the cast part and the different mold components. In each subdomain, a preconditioned conjugate gradient solver is used. The mechanical analysis assumes the mold is rigid. A thermoelastic-viscoplastic rheological model is used to compute the constrained shrinkage of the part, resulting in an effective local air gap width computation. At each time increment, a weak coupling of the heat transfer and mechanical analyses is performed. Comparisons of experimental measurements and model predictions are given in the case of a hollow cylindrical aluminum alloy part, showing a good quantitative agreement. An application to an industrial aluminum casting is presented, illustrating the practical interest of thermomechanical computations in solidification analysis. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|