Mathematical model of filling disk-shaped mold cavity in steady state was studied. And the mathematical model under vibration field was developed from the model in steady state. According to the model of filling disk-shaped mold cavity in steady state, the filling time, the distribution of velocity field and the pressure field were obtained. The analysis results from rheological analytic model were compared with the numerical simulation results using Moldflow software in the powder injection molding filling process. Through the comparison, it is found that it is unreasonable to neglect the influence of temperature when calculated the pressure changing with the time at the cavity gate, while it can be neglected in other situations such as calculating the distribution of the velocity fields. This provides a theoretical reference for the establishment of correct model both in steady state and under vibration force field in the future.

中文翻译：

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粉末注塑充型过程流变分析模型与数值模拟的比较。

研究了稳态下充填盘状模腔的数学模型。从稳态模型出发，建立了振动场下的数学模型。根据稳态填充盘状模腔模型，得到了填充时间，速度场分布和压力场。将流变分析模型的分析结果与粉末注射成型填充过程中使用Moldflow软件的数值模拟结果进行比较。通过比较发现，在计算腔室浇口压力随时间的变化时忽略温度的影响是不合理的，而在计算速度场的分布等其他情况下可以忽略不计。