【摘要】 用有限差分法模拟了粉末注射成形简单坯件冷却凝固过程应力的生成，以预测坯件内是否产生裂纹，并将计算结果与文献实验结果作了比较。预测结果与文献结果在较高模温下一致，但模温较低时出现偏差。同时，还简要探讨了模型中引入误差的主要原因，为进一步优化模型提供了途径。更多还原

【Abstract】 A finite difference numerical method was applied to the solidification process of a simple powder injection molded compact to simulate the resildual stress profile. The computing results were compared with the experimental results given by references and the key reasons which introduced errors into the model were also discussed briefly. The stress cracking was successfully predicted at higher mold temperature but there were some differences between the prediction with the experiments at lower die temperature. Hence, the analysis method provides an applicable means to optimize the machine parameters in injection molding stage.更多还原