TY - JOUR

T1 - Comparison of numerical simulation models for predicting temperature in solidification analysis with reference to air gap formation

AU - Kron, J.

AU - Bellet, M.

AU - Ludwig, Andreas

AU - Pustal, Björn

AU - Wendt, J.

AU - Fredriksson, Hasse

PY - 2004/12/31

Y1 - 2004/12/31

N2 - 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.

AB - 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.

KW - Air gap formation

KW - Benchmark exercise

KW - Coupled problems

KW - Finite elements

KW - Numerical modelling

KW - Solidification

KW - Stress-strain analysis

UR - http://www.scopus.com/inward/record.url?scp=10844286305&partnerID=8YFLogxK

U2 - 10.1179/136404604225020669

DO - 10.1179/136404604225020669

M3 - Article

VL - 17.2004

SP - 295

EP - 310

JO - International journal of cast metals research

JF - International journal of cast metals research

SN - 0953-4962

IS - 5

ER -