Bubble pressure result

The Bubble pressure result shows the pressure of the gas inside the bubble distributed across the part.

This result is generated from a Microcellular injection molding analysis, for the following mesh types:

• Midplane
• Dual Domain
• 3D

Using this result

The Bubble pressure result is very useful for checking whether there are any pressure spikes. This is normally a sign of imbalance. Normally this can be fixed by changing gate location(s) or the amount of gas injected into the polymer. Sometimes only a subtle change is necessary.

Creating a Bubble pressure XY Plot result allows you to compare the bubble pressure against the normalized thickness.

Note: For models with midplane or dual domain mesh types, the Bubble pressure result is only available if the Number of profiled results specified in the solver parameters is greater than zero.

To specify the numbers of profiled results to output, click (Home tab > Molding Process Setup panel > Process Settings), if necessary click Next to access the Fill+Pack Settings page, click Advanced options, click Edit in the Solver parameters group, and select the Intermediate Output tab.

Things to look for

• If the bubble pressure is too high, warpage may occur. It is recommended that the bubble pressure be kept as low as possible.