Study on Numerical Simulation and Pressure Control for Vacuum Casting Quality

摘要：

Differential pressure Vacuum Casting is a new kind of rapid manufacturing technology. The filling speed is the key process parameter which decides the filling quality. In order to ensure the stabilization of the flowing speed, qualitative model has been set up. Both CAE software and BP Neural Network Models have been used to find the relation between the inlet pressure and the forward speed. Using the inverse BP Model and giving a constant velocity of every section in the cavity, the expected pressure values have been got. In terms of the Filling Length Measure Method (FLMM) proposed by the researchers, the time points of flowing stage have been evaluated. The relation between the expected values of inlet pressure and time points has been concluded from this study.

关键词： vacuum casting filling speed qualitative model BP neural network inlet pressure

作者: Y.Y.Liu D.L.Liu J.W.Wang J.Huang Z.F.Chi Q.X.Hu

作者单位: Rapid Manufacturing Engineering Center,Shanghai University,Shanghai 200444,China

会议类型: 国际会议

会议名称: The 3rd Conference of Cross-Strait Engineering Education and Ceeusro & 1st International Conference on Engineering Technologies and Ceeusro(ICETC2009)(第三届工程技术与产学研研讨会暨第一届国际功能制造技术学术会议)

会议地点: 常州

会议语种:英文

页码: 678-682

在线出版日期: 2009-11-19（万方平台首次上网日期，不代表论文的发表时间）