Numerical simulation of stress field in casting solidification process based on Abaqus

摘要

During casting solidification process, it is easy to cause thermal stress for many reasons, which can greatly influence the dimensional accuracy and the quality of casting. With the help of numerical simulation, the stress field can be predicted dynamically. The casting process can be optimized by analyzing the simulation results. An approach to simulate the thermal stress field based on Abaqus during casting solidification process is proposed. Firstly the temperature field was simulated. Then the simulation results of the temperature field were added to the stress analysis model as the thermal load to simulate stress field. The model was based on the thermal elastic-plastic model and ignores the interaction of the mold and the effect of phase change. An experiment was carried out in the laboratory to assess the simulation results. The comparisons show that the simulation results are in good agreement with the experimental results.