Fill Step Results

A variety of results are available after you successfully complete the fill step of a plastic injection simulation.

Result Description
Fill TimeDisplays the time when the flow front reaches each point in the model. You can watch the flow front move through the part cavity in a Scan single frame-style animation; see About Animation for more information.

If the injected material does not completely fill the mold cavity, the Fill simulation results in a short shot case. A short shot case terminates the analysis, and the Diagnostic Viewer dialog box cites the short shot case as the reason for terminating the analysis. This approach saves simulation time because analysis resources are not spent on poorly molded parts. You can still examine the results of analyses that end in short shot cases. Reviewing the incompletely molded part can help you determine the cause of the molding problem.

Pressure at End of Fill Displays the pressure distribution at the end of the fill step.
Temperature at End of FillDisplays the temperature distribution at the end of the fill step. When the mesh is refined enough to include multiple cells through the thickness of the part, the temperature on the part surface is likely lower than in the center. You can use a cutting plane to view these values.
Flow Front Central TemperatureDisplays the melt front temperature at the end of filling. As a result of the fountain flow effect, this temperature is relatively uniform through the thickness of the part.
Temperature Growth at End of FillDisplays the growth in temperature due to shear heating.
Bulk Temperature at End of FillDisplays an average of the temperature distribution through the thickness of the part. In the averaging process, material that is moving at a higher velocity is weighted more heavily than stagnant material.
Shear Stress at End of FillDisplays the shear stress distribution in the part.
Shear Rate at End of FillDisplays the shear rate distribution in the part. High shear rates occur in regions where large variations in flow velocity occur over short distances.
Volumetric Shrinkage at End of FillDisplays the distribution of volumetric shrinkage assuming the part has cooled from its state at the end of the fill step to a uniform temperature of 25 C.
Sink MarksDisplays sink marks, which are surface depression defects that occur due to shrinkage. They might be reduced or eliminated by effectively compensating for shrinkage during the subsequent packing phase of injection molding.
Injection Location ContributionDisplays the fraction of material introduced through each injection location. This is useful when multiple injection locations are defined.
Ease of FillDisplays the relative pressure required to fill each region of the cavity. Blue regions can be filled with pressures below 70 percent of the maximum injection pressure, green regions require pressure that exceeds 70 percent of the maximum injection pressure, and red regions require pressure that exceeds 85 percent of the maximum injection pressure.
Weld LineDisplays regions where flow fronts meet during filling, potentially forming weld line defects.
Air TrapDisplays regions where isolated pockets of air develop during the filling process, which might require venting in the tooling.