A New Numerical Simulation Model for Shrinkage Defect during Squeeze Casting Solidification Process
In this paper,according to the characteristics of squeeze casting solidification process,the calculation model (FDM format) of the partial differential equations with high thermal conductivity is used to the numerical simulation of temperature field.Dynamic isolated multi-molten pool judgment method is used to determine the position of the pool and FEM is used to calculate the pressure of pool center.If the pressure of molten pool center has been down to 0,the liquid metal closed in the scale will be solidification under the condition of no pressure,and will shrinkage based on the way of gravity shrinkage.The equivalent liquid surface descending method of isolated molten pool is used to predict the formation of shrinkage defect; the simulation result is coinciding with experimental data.
squeeze casting casting shrinkage defect simulation FDM/FEM
Hua Hou Honghao Ge Yuhong Zhao Weiming Yang
College of Materials Science and Engineering, North University of China, Taiyuan, China ; Research Center of Special Liquid Forming Technology, North University of China, China
国际会议
厦门
英文
309-314
2012-12-28（万方平台首次上网日期，不代表论文的发表时间）