Process Parameters

Use the Process Parameters icon to define the ending condition of the simulation, define a parting line, and set up the model for tilt pouring, centrifugal dispensing, or moving parts.

Location: Dispensing ribbon, Process icon

Basic

Use the Basic tab to define the conditions for ending a simulation.

Ending Conditions

Set the conditions to end your analysis with these parameters:
Parameter Description
Filled Volume End the simulation when the material volume in the fluid part reaches the specified percentage.
Time End the simulation when the filling time exceeds the input value.
Parting Line Enable this option to define the housing parts' parting line gap, and if desired, define variations in the gap thickness over time.
Note: This control is visible only when at least two housing parts are present in the model.
Gap Thickness Enter the gap thickness between housing parts.
Variable Thickness Enable this option to define variations in the gap thickness over time. The first column in the table is time in seconds from the beginning of the process. The second column is the length of the gap at that time in the process.
Insert and delete rows in the data table for variable thickness:
  • The table defaults to five rows. The default value for the first row is 1.0 seconds in the time column and 1.0 mm in the thickness column, with each subsequent row showing an increase of 1 second and 1 mm.
  • Select the first button to insert a row in the table after the selected row.
  • Select the second button to insert a row in the table after the last data point.
  • Select the third button to delete a selected data point in the table.
Air Vents Include defined air vents in the simulation.
Note: This control is visible only when at least one vent is present in the model.
Air Back Pressure Include back pressure in the simulation.
Note: This is not available unless the Air Vents option is enabled.
Initial Pressure Change the initial back pressure setting. The default value is one atmosphere.
Activate Time Change the moment when back pressure will engage. Enter a time in seconds from the start of the process.
Air Pocket Stop Stop applying air back pressure at a specified internal pressure.
Note: This control is not available unless the Air Back Pressure option is enabled.
Release Pressure Change the internal pressure at which air back pressure will be released.

Advanced

Use the Advanced tab to define tilt-pouring, centrifugal process, or surface tensionfor a dispensing analysis.

Tilt Pouring

Select the option for Tilt Pouring on the Advanced tab and define the parameters in the microdialog.
Parameter Description
Select and manipulate the Move tool to define the tilting location, or enter the X, Y and Z coordinates in the microdialog.
Rotation Axis Select the axis to orient the tilt of the model.
Preview Play an animation of the of the tilt-pouring rotation.
Time Enter the start time for each tilt-pouring event.
Angle Enter the angle of the tilt relative to the current position of the model.
Insert and delete rows in the data table for tilt pouring:
  • Select the first button to insert a row in the table after the selected data point. The default value is 5 seconds followed by divisions of .5.
  • Select the second button to insert a row in the table after the last data point.
  • Select the third button to delete a selected data point in the table.
To reverse the rotation of the tilt, double-click the arrow that indicates the tilt direction on the model.


Centrifugal Process

Select the option for Centrifugal Process on the Advanced tab and define the parameters in the microdialog.

Parameter Description
Select and manipulate the Move tool to position the rotational axis, or enter the X, Y and Z coordinates in the microdialog.
Rotation Axis Select the axis to orient the rotation of the model.
Time Enter the start time for each change in angular velocity.
Angular Velocity Set the mold's angular velocity at different times during the process.
Insert and delete rows in the data table for centrifugal process:
  • The table defaults to two rows. The default value for both columns in the first row is 0. The default value for the Time column in the second row is 5 seconds. The default value for the Angular Velocity column in the second row is 60.
  • Select the first button to insert a row in the table after the selected row.
  • Select the second button to insert a row in the table after the last data point.
  • Select the third button to delete a selected data point in the table.
To reverse the rotation of the mold, double-click the arrow that indicates the rotational direction on the model.

Surface Tension

Select Surface Tension to define the properties of the dispensed material.
Parameter Description
Contact Angle Define the angle between the liquid surface and the solid surface where they meet.
Coefficient Enter the surface force of the liquid material in Newton-metres.
Relaxation Factor The relaxation factor helps to ensure the dispensing process is computed reliably. You will rarely want to adjust this input.

Variable Air Temperature

Select Variable Air Temperature to define ambient temperature at specified times during the curing process, then click the button to plot temperature changes.

Select After Ejection to control the air temperature after the dispensed part is ejected from the housing. In the Ejection Time field, specify the time when the part will be ejected.

Note: The After Ejection and Ejection Time controls appear only when the Variable Air Temperature checkbox is checked.
Parameter Description
Time Enter the time for each change in air temperature.
Temperature Enter the air temperature at each time.
Insert and delete rows in the data table for variable air temperature:
  • The table defaults to two rows. The default value for Time column the first row is 0. The default value for the Time column in the second row is 100 seconds.
  • Select the first button to insert a row in the table after the selected row.
  • Select the second button to insert a row in the table after the last data point.
  • Select the third button to delete a selected data point in the table.