| 注塑充填过程变厚度截面速度压力场数值模拟 |
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| 引用本文： | 刘永志,赵振峰,马兰,申长雨. 注塑充填过程变厚度截面速度压力场数值模拟[J]. 化工学报, 2009, 60(7): 1818-1822 |
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| 作者姓名： | 刘永志 赵振峰 马兰 申长雨 |
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| 作者单位： | 郑州大学橡塑模具国家工程研究中心,河南,郑州,450002;郑州大学橡塑模具国家工程研究中心,河南,郑州,450002;郑州大学橡塑模具国家工程研究中心,河南,郑州,450002;郑州大学橡塑模具国家工程研究中心,河南,郑州,450002 |
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| 基金项目： | 国家自然科学基金重大项目(10590352);;国家科技支撑计划项目(2006BAF04B11)~~ |
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| 摘 要： | 采用有限元法，对注塑充填过程中“凸”型和“刀”型塑件截面的速度场和压力场进行数值模拟。通过结果分析得出：广义Hele-Shaw流动假设在熔体前沿部分不合理，在塑件截面突变处Hele-Shaw假设也失效，尤其在突变的较宽截面处误差更大。
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| 关 键 词： | 注塑 变截面 数值模拟 |
| 收稿时间： | 2009-01-07 |
| 修稿时间： | 2009-3-18 |
Numerical simulation for velocity and pressure in filling stage of injection molded parts with uneven thickness |
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| LIU Yongzhi,ZHAO Zhenfeng,MA Lan,SHEN Changyu. Numerical simulation for velocity and pressure in filling stage of injection molded parts with uneven thickness[J]. Journal of Chemical Industry and Engineering(China), 2009, 60(7): 1818-1822 |
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| Authors: | LIU Yongzhi ZHAO Zhenfeng MA Lan SHEN Changyu |
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| Affiliation: | Advanced Polymer Processing Technology of National Engineering Research Center;Zhengzhou University;Zhengzhou 450002;Henan;China |
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| Abstract: | The velocity and pressure in the filling stage of injection-molded parts with uneven thickness were simulated with finite element method(FEM).For given examples,the simulation results illustrated that the Hele-Shaw approximation did not work for the flow front and the area where the thickness was suddenly changed.The Hele-Shaw approximation tends to give larger error in the thick part if the thickness is changed. |
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| Keywords: | injection molding uneven thickness numerical simulation |
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