Fill-Pack Parameters PropertyManager

The Fill - Pack Parameters PropertyManager defines the fill and pack process parameters that apply to the entire process and environment, rather than to a specific injection unit.

To open the Fill-Pack Parameters PropertyManager

  • In the PlasticsManager, expand Global Parameters , and double-click Fill-Pack .

General

Gravity Downward Direction for Fill Specifies the direction of the gravitational force in the global coordinate system.

Select one of the global coordinates X-, Y-, or Z- to define the direction of the gravitational force.

Fiber Orientation Calculation

Calculates the fiber orientation of polymer materials that have a percentage of fiber during a simulation.

To improve the strength and performance of plastic products, many plastics contain fibers. The fiber percentage of each material is included in the polymer material database. Material data, such as viscosity coefficients, reflect the properties of a particular fiber percentage and polymer combination.

During cavity filling, the fibers become oriented along the flow directions. This produces changes in the microstructure that affect the mechanical properties and final dimensions of the product.

Current % Fiber based on Weight

Specifies the percentage of fiber in the material based on weight.

For example: for 1 kg material with 200 gr of fiber, you enter 20 (%) for Current % Fiber based on Weight. If you select a polymer from the Material Database, the fiber percentage value is taken from the database.

Venting Analysis

In a standard simulation, the presence of air in the cavity is ignored. However, Venting analysis allows you to include the effect of the air, and the pressure that it may exert on the melt front.

Cavity Initial Air Pressure (MPa) The initial air pressure for an empty cavity is 14.7psi or 0.1MPa by default.

Cavity Initial Air Temperature (°C) The initial air temperature in the cavity is the room temperature by default.
  Solver Settings Provides access to the Advanced Settings for Flow/Pack Solver.

Accept the default values of the solver settings to produce the best results over a wide range of cases. For most analyses, you do not need to modify the solver settings.

If you run a Venting analysis, you must define vent locations in the cavity. A Venting analysis identifies and tracks bubbles that may form and coalesce in the cavity away from air vents and computes the pressure that develops in them. See Air Vents PropertyManager.

Recommendation: Do not define any air vents for the first analysis. Use the Venting Pressure result to guide air vent placement, and avoid placing them where they are not required.