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 20 筆
第 116 頁
... AIR TRAPS 7.1 Introduction A weld line can cause poor surface appearance as well as structural weakness in a molded part . An air trap can prevent complete filling of the cavity and leave a scar on the part surface . These defects have ...
... AIR TRAPS 7.1 Introduction A weld line can cause poor surface appearance as well as structural weakness in a molded part . An air trap can prevent complete filling of the cavity and leave a scar on the part surface . These defects have ...
第 136 頁
... air trap at the end of the weld - line formation ; otherwise , they will form two air traps at both ends of the weld line . The sections which are not going to form a weld line at the end of flow will also form air traps . The results ...
... air trap at the end of the weld - line formation ; otherwise , they will form two air traps at both ends of the weld line . The sections which are not going to form a weld line at the end of flow will also form air traps . The results ...
第 141 頁
... air traps could hardly be interpreted by the CAE user even with the melt - front advancement being displayed in color contour or in shaded images . The interpreted weld lines and air traps based upon the current program are shown in ...
... air traps could hardly be interpreted by the CAE user even with the melt - front advancement being displayed in color contour or in shaded images . The interpreted weld lines and air traps based upon the current program are shown in ...
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