求翻译：尺寸精度模拟及数学模型建立尺寸精度模拟是一个复杂的热力祸合问题，在模具凝固过程中铸件与铸型之间有接触力产生，同时又发生着不平衡热传导，为此，我们采用超大型分层实体制造系统。针对电机壳体模具成型特点，经过反复计算比较，确定从铸件与铸型间的传热量及弹塑性变形量入手，建立数学模型。在运算过程中，我们利用弹塑性热力祸合分析方法对电机壳体模具凝固过程进行三维非线性有限元分析，直至零件制作完毕。即所谓使材料生长而不是去掉材料的制造过程是什么意思？

Dimensional accuracy of simulation and mathematical modeling of the dimensional accuracy of simulation is a complex thermal coupling between the casting and the casting mold solidification process, the contact force, while imbalance of heat conduction, for which we use very large laminated object ma

Size precision analog and mathematical model building size precision analog is a complex problem in the heat, and in the mold casting solidification process with molded contact between force, while at the same time there was an imbalance heat transfer, and for that we have a large hierarchical entit