Title: Influence of part’s geometry characters on filling length of injection molded parts with high aspect ratio micro structures
Abstract: With Moldflow MPI 6.0 software based on Navier-Stokes momentum equation for PMMA material,the influences of geometry characters of a part,such as micro structures’ position,shape,section dimension,aspect ratio and cavity’ width,on the filling length of micro structures were investigated under the cavity pressure 100 MPa,and at melt temperature 250 ℃ with different mold temperatures.The results show that the distance between microstructure and cavity terminal is smaller,the filling is longer,but when the distance surpasses one value,the filling length has nothing to do with the position of the microstructure.The smaller the microstructure inclination angle,the longer the filling.The bigger the size of microstructure section,the smaller the resistance of the melts in filling,and the longer the filling.The difference between the size of the cavity section and the size of the microstructure is less,the filling is more advantageous,but the filling length of microstructure has nothing to do with the high aspect ratio.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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Cited By Count: 1
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