Cornell Injection Molding Program Progress Report No. 15: Covering the Period from September 1988 Through January 1990College of Engineering, Cornell University, 1990 - 338 頁 |
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第 1 到 3 筆結果,共 31 筆
第 iv 頁
... density distributions in injection - molded polystyrene strips were measured with a density - gradient column and found to be most sensitive to packing pressure and injection melt temperature although the overall density variation was ...
... density distributions in injection - molded polystyrene strips were measured with a density - gradient column and found to be most sensitive to packing pressure and injection melt temperature although the overall density variation was ...
第 204 頁
... density due to ǝT / at < 0 is just compensated for by a decreasing density due to ap / ǝt < 0 . Hence , for a given cooling rate , a larger temperature dependence of density combined with a smaller pressure dependence will require a ...
... density due to ǝT / at < 0 is just compensated for by a decreasing density due to ap / ǝt < 0 . Hence , for a given cooling rate , a larger temperature dependence of density combined with a smaller pressure dependence will require a ...
第 211 頁
... density due to an increase in pressure in this region ( note that the sprue pressure is increasing continually during this stage ) . Simultaneously , AP 12 ( solid triangles ) increases steadily as more flow is diverted to the single ...
... density due to an increase in pressure in this region ( note that the sprue pressure is increasing continually during this stage ) . Simultaneously , AP 12 ( solid triangles ) increases steadily as more flow is diverted to the single ...
常見字詞
air traps apparent viscosity behavior best-fit boundary calculated candidate curves candidate points Carreau model cavity-filling COOL3D cooling rate corresponding Cross model density determined developed elements equation experiments Figure filling stage flow rate flow-front region fluid Fraction of solid function gate geometry glycerin Hieber increase injection molding injection-molding injection-molding process instant linear lines and air material melt front mesh MOLDFLOW Newtonian Newtonian fluid node numerical optimization particles Pb alloy PMMA polygon polypropylene polystyrene post-filling stage power-law predicted melt-front advancement pressure drop pressure traces processing conditions Progress Report relative viscosity results in Fig rheological rheometer segments semi-solid alloy shear rate shear stress shown in Fig shrinkage simulation solid fraction Styron surface suspension SWEEP2D swept area symbols Table thermal conductivity thermoset thickness torque V₁ velocity vertex curve viscoelastic viscosity model volume fraction volumetric volumetric flow rate warpage weld lines yield stress