Question

Studies on solidification and contraction in sg iron castings.

Answer 1

⭐The latest progress on the numerical simulation of mold-filling and solidification process of shaped iron casting in China was reviewed.

⭐ In order to obtain an accurate profile of the velocity distribution and to track the free surface in the mold-filling process of castings, the SOLA-VOF algorithm was improved, in particular with respect to efficient free surface treatment and turbulence.

⭐Parallel computational techniques were implemented to accelerate the fluid flow calculation time.

⭐Based on a series of experimental studies, a new dynamic contraction expansion accumulation method (DECAM) was developed to predict the shrinkage cavity of S.G. iron castings.

⭐For stress simulation, a combined FDM/FEM method was implemented to analyze the residual stress and deformation of castings.

⭐Models for the simulation of microstructure and prediction of mechanical properties of S.G. iron were established.

⭐The verifications and practical applications of the simulation software show that the models and techniques are efficient and appropriate for the numerical simulation of shaped castings.

Answer 2

Answer:

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Explanation:

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