凝固过程是一个动态过程 ,它的数值模拟通常会得到大量的数据结果。软件用户对这些繁琐的数据难以进行分析并做出准确及时的判断 ,故凝固过程的三维动态模拟显得特别重要。为此提出基于一个特定临界固相率的模拟动态凝固过程的方法 ,逼真、客观地反映出铸件的凝固过程 ,能够很好地预测缩孔、缩松缺陷的大小和位置 The solidification process is a dynamic process, and its numerical simulation usually results in a large amount of data. Software users of these cumbersome data difficult to analyze and make accurate and timely judgment, so the three-dimensional dynamic simulation of solidification process is particularly important. Therefore, a method of simulating the dynamic solidification process based on a specific critical solid fraction is proposed, which realistically and objectively reflects the solidification process of castings and can well predict the size and location of shrinkage defects and shrinkage defects