摘要
运用Solidworks三维建模软件建立"田"字形口模实体模型,取其1/4作为分析对象进行ANSYS网格划分,在Polyflow中采用190~℃聚乳酸流体进行仿真分析,得到正常口模和经过逆向挤出设计口模的流场模拟结果,对比分析了7个截面上流场和挤出形状,并对其中4个典型截面建立折线图进行深入对比。结果表明:经过逆向挤出设计的口模内流速分布更为均匀,口模内流体速度先略有上升后不断下降并趋近于一个稳定值,产品最终截面形状符合要求。
Using Solidworks 3I） modeling software to establish the model of Tian-Shaped plastics profile extrusion die. One-quarter part of the Die was divided into ANSYS grid. The melt of poly lactic acid wits used as fluid at 190 ℃ in Polyflow simulation analysis. The flow field simulation results of the normal die and the design of the inverse extrusion die were obtained. Tbe flow field and extrusion shape of seven cross sections were compared and analyzed. And the flow chart of typical sections was compared in depth. The results showed that the flow velocity distribution in the die was more uniform. The flow rate in the die increased slightly and then decreased to a stable value and the shape of final section was composite requirement.
作者
蒋卫鑫
黄志刚
赵玉莲
古劲
王晓峰
张凯
JIANG Wei-xin1,2 ,HUANG Zhi-gang1,2 ,ZHAO Yu-lian1,2,GU Jin1,2, WANG Xiao-feng1,2, ZHANG Kai1,2(1. School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China ; 2. Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evaluation Technology , Beijing 100048, China)
出处
《食品与机械》
CSCD
北大核心
2017年第12期86-90,共5页
Food and Machinery
基金
国家重点研发计划(编号:2016YFD0400305)
关键词
田字形口模
逆向挤出
流场分析
Tian Shaped plastics profile extrusion die
inverse extru sion
flow field analysis
