[1]李建敏1,付秀娟1,刘玉兰1,等.玻纤/尼龙66异型材挤出流动的数值模拟[J].武汉工程大学学报,2015,37(02):41-45.[doi:10. 3969/j. issn. 1674-2869. 2015. 02. 009]
,,et al.Numerical simulation of GF/PA66 profile extrusion flow[J].Journal of Wuhan Institute of Technology,2015,37(02):41-45.[doi:10. 3969/j. issn. 1674-2869. 2015. 02. 009]
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玻纤/尼龙66异型材挤出流动的数值模拟(/HTML)
《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]
- 卷:
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37
- 期数:
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2015年02期
- 页码:
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41-45
- 栏目:
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材料科学与工程
- 出版日期:
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2015-02-28
文章信息/Info
- Title:
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Numerical simulation of GF/PA66 profile extrusion flow
- 文章编号:
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1674 - 2869(2015)02 - 0041 - 05
- 作者:
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李建敏1; 付秀娟1; 刘玉兰1; 周 飘2
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1.武汉工程大学材料科学与工程学院,湖北 武汉 430074;2.武汉工程大学机电工程学院,湖北 武汉 430205
- Author(s):
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LI Jian-min1; FU Xiu-juan1; LIU Yu-lan1; ZHOU Piao2
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1.School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China2. School of Mechanical and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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- 关键词:
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塑料异型材; 速度场; 流动平衡
- Keywords:
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plastic profile; velocity field; flow balance
- 分类号:
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TQ320.66
- DOI:
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10. 3969/j. issn. 1674-2869. 2015. 02. 009
- 文献标志码:
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A
- 摘要:
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以有限元软件ANSYS为平台,采用数值模拟方法对塑料熔体在模头内的流动情况进行了计算机模拟与数值分析,获得了挤出工艺与挤出结果之间的规律性关系. 以模头出口处各区域的流动平衡值为目标函数,深入系统地研究了螺杆转速和熔体温度对熔体流动均匀性的影响. 分别模拟了螺杆转速为5、8、10、15 r/min和熔体温度为260、270、280 ℃时,流道出口截面的速度分布. 结果表明, 螺杆转速与熔体温度对熔体流动均匀性的影响较大;随着螺杆转速和熔体温度的提高,流道出口截面上的节点和区域的流速明显变大,但流速差却没有下降,异型材的挤出加工的稳定性变差. 低温低转速下的熔体表现出更好的流动平衡性,玻纤/尼龙66异型材的挤出成型的最优化工艺条件是:螺杆转速为5 r/min,口模温度为260 ℃.
- Abstract:
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The computer simulation and numerical analysis of the flow condition of plastics melt in extrusion die were introduced by adopting numerical simulation based on ANSYS software. And the relationships between extrusion process conditions and extrusion results were gained. Taking the flow balancing value of each sub-field on the outlet section as the objection function, the effects of the screw speed and melt temperature on uniformity of extrusion flow were deeply studied. The velocity distribution of the outlet section was simulated in different parameters that the screw speed were 5,8,10 and 15 r/min and melt temperature were 260,270 and 280 ℃,respectively. Numerical simulation results show that uniformity of melt flow is closely related to the screw speed and the melt temperature,with the increase of the screw speed and the melt temperature, the velocity of the nodes and the areas on the outlet section increases significantly, but the velocity differences of the nodes and the areas do not decrease, and the stability of extrusion process for the plastic profile gets worse. The uniformity of melt flow is better when the screw speed and the melt temperature is low. The optimum process conditions of the GF/PA66 profile extrusion are screw speed of 5 r/min and melt temperature of 260 ℃.
参考文献/References:
[1] 刘斌. 塑料挤出流动数值分析及其模具结构设计优化研究[D].大连:大连理工大学,2003.LIU Bin. Study on numerical analysis of plastic extrusion flow and design optimization of extrusion die[D]. Dalian: Dalian University of Technology,2003.(in Chinese)[2] 赵丹阳. 塑料异型材挤出成型过程数值模拟及其模具设计优化[D]. 大连:大连理工大学,2007.ZHAO Dan-yang. Numerical simulation of the extrusion process for plastic profile and design optimization of extrusion die[D]. Dalian: Dalian University of Technology,2007.(in Chinese)[3] 牟玥. 挤出加工流场中聚合物成型机理及其工艺模拟与优化研究[D]. 济南:山东大学,2008.MU Yue. Research on polymer forming machanism in the extrusion process and its corresponding simulation and optimization[D].Jinan: Shandong University,2008.(in Chinese)[4] 刘斌,江开勇,郑清娟,等. 基于流动平衡的塑料挤出模优化设计[J]. 中国塑料,2005,19(2):86-89.LIU Bin, JIANG Kai-yong, ZHENG Qing-juan, et al. Optimal design of plastic extrusion dies based on flow balance[J].China Plastic,2005,19(2):86-89.(in Chinese)[5] 张振. 基于ANSYS的塑料异型材挤出模头中功能块流道的设计[D].合肥:合肥工业大学,2008.ZHANG Zheng. Ansys-based design of sprue runner in extrusion tooling outlet for extrusion forming the function part of plastic profile[D].Hefei:Hefei University of Technology,2008.(in Chinese)[6] 刘斌,王敏杰,刘耀中.流道结构对塑料挤出流动影响的数值分析[J].大连理工大学学报,2003,43(4):442-446.LIU Bin,WANG Min-jie,LIU Yao-zhong. Numerical analysis of effect of channel structure on plastic extrusion flow[J]. Journal of Dalian University of Technology, 2003,43(4):442-446.(in Chinese)[7] 张会可,刘玉兰,付秀娟. 玻纤增强PA66复合材料挤出流动性能的研究[J]. 工程塑料应用,2013,41(8):56-59.ZHANG Hui-ke,LIU Yu-lan,FU Xiu-juan.Extrusion flow properties of glass fiber reinforced PA66 composites[J]. Engineering Plastics Application,2013,41(8):56-59.(in Chinese)
备注/Memo
- 备注/Memo:
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收稿日期:2014-12-15基金项目:武汉工程大学科学研究基金(K201301);武汉工程大学研究生教育创新基金(CX2014072)作者简介:李建敏(1991-),男,湖北天门人,硕士研究生.研究方向:材料加工.
更新日期/Last Update:
2015-03-21