Numerical simulation of cavity roughness effects on melt filling in microinjection molding
作者： N. S. Ong , H. L. Zhang , Y. C. Lam
DOI: 10.1002/ADV.20118
关键词:
摘要: In microinjection molding, when dimensions of molded parts, and thus the cavity are small, roughness may become significant for filling polymer melt. this paper, effects on melt flow into a thin circular were investigated numerically with aid newly developed inlet-velocity iterative procedure. The different mold temperatures, thicknesses, injection rates investigated. trends predicted by numerical simulation in good agreement those obtained from experiment. When surface approaches portion (e.g., 10%) thickness, effect becomes extremely pronounced especially at lower temperatures velocities. © 2009 Wiley Periodicals, Inc. Adv Polym Techn 27:89–97, 2008; Published online InterScience (www.interscience.wiley.com). DOI 10.1002/adv.20118
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