基于物性遗传的钢锭铸锻全过程数值模拟OA

By using of the convex hull method and the Python language,a screening and reconstruction program for the shrinkage cavity and shrinkage porosity of steel ingot was developed,and the numerical simulation of overall casting and forging processes based on the inherited physical properties was realized.The coordinate nodes meeting the threshold requirements were extracted from the.unv format file of the casting simulation software,and the geometric entities of the feature regions were reconstructed using the convex hull algorithm,generating an STL output file readable by the forging simulation software.The numerical simulation results of casting-forging chain processes indicate that the boundary contours of the shrinkage cavity and shrinkage porosity regions formed during solidification process remain clear during the deformation process.When the reduction rate is relatively low(12％),the volume variation rate of the shrinkage cavity and shrinkage porosity changes little.Whereas when the reduction rate reaches 21.74％,the volume variation rate of the shrinkage porosity area is greater than 2.7％,enabling the closure of tiny voids.