Vent region pressure result

The Vent region pressure shows the predicted air pressure within air traps or at regions connected to specified venting analysis (air vent) locations.

This result is generated by a Fill or Fill+Pack analysis sequence for Thermoplastics Injection Molding, Thermoplastics Overmolding, Reactive Molding or Microchip Encapsulation molding processes using 3D analysis technology, when the option to Perform venting analysis is enabled.

Note: The Vent region pressure result is an intermediate result, meaning its animation by default is through time and the scale by default is the minimum to maximum of the entire range of the result.

You can control how this result is displayed by editing the plot properties.

Using this result

The Vent region pressure result shows the air pressure in areas of the part that are not filled with polymer. You can use this result together with the Air traps, including air vents result to identify regions of entrapped air that may be suitable vent locations.

Things to look for

At the end of the analysis, the vent region pressure should be zero across the entire part. This means that there should be no regions of entrapped air where pressure can build up. To optimize the placement of air vents, try one of these options.

• Move the injection location(s) so that the air traps form in easy-to-vent areas.
• Move the venting analysis location to more closely match the location of the trapped air to be vented.

Note: Changes such as these can only be made using a licensed Autodesk Simulation Moldflow Adviser or Autodesk Simulation Moldflow Insight product.