The Pressure at injection location result shows the pressure at the injection location at various times during the filling and packing phases of the analysis.
Using this result
All of the injection locations on the model will have the same pressure. This is an assumption used in the analysis.
The Pressure at injection location result is very useful for checking whether there are any pressure spikes, which is normally a sign of imbalance. This could be within a part or between parts. If it is within a part, normally this could be fixed by changing gate location(s). Sometimes only a subtle change is necessary.
The Pressure at injection location result is an XY plot generated from Fill and Microchip Encapsulation analyses.
Note: Changing the gate location can only be made using a licensed Autodesk Simulation Moldflow Adviser or Autodesk Simulation Moldflow Insight product.
Things to look for
- A significant change in the slope of the pressure curve, during the filling phase, indicates a change in the pressure gradient in the part. Often this is caused by a flow imbalance within a part or for multi-cavity models between parts. Review the fill time result and other pressure results for balance problems.
- The packing profile is shown with this result. The default packing profile uses 80% of the pressure at switch over for 10 seconds. On this result, the pressure will drop instantaneously 20% then the line will be horizontal for 10 seconds.
- This result can also be used to ensure the packing profile is correct.