Application of smooth particle hydrodynamics (SPH) method in gravity casting shrinkage cavity prediction

  • Xiaofeng NiuEmail author
  • Jingyu Zhao
  • Baojian Wang


Gravity casting has been applied extensively. Cavity will occur in the casting and form shrinkage cavity in solidification due to volume reduction and lowering of liquid metal level, which will affect casting quality. The formation process of shrinkage cavity cannot be directly observed and needs to be displayed by using the numerical simulation method. The smoothed particle hydrodynamics (SPH) method is a pure Lagrange method with no grids and has now been applied in casting numerical simulation, but the prediction model of the shrinkage cavity in gravity casting solidification based on the SPH method has not been reported. In this paper, the mathematical model for temperature field (including latent heat treatment) and shrinkage cavity prediction in solidification is established based on the SPH method. The correctness for the temperature field (including latent heat treatment) is validated by computing temperature field in the solidification of an L-shaped aluminum alloy casting, and correctness for the prediction of shrinkage cavity is validated by computing the shrinkage cavity in the solidification of a cylindrical steel casting.


Smooth particle hydrodynamics Shrinkage cavity Prediction Simulation 



This research has been financially supported by the National Natural Science Foundation of China (Nos. 51874209, 51574176); Major Research and Development Plan of Shanxi Province (International Cooperation Project) (201603D421028).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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© OWZ 2019

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuanChina
  2. 2.AAC TechnologiesChangzhouChina

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