ME-542 Manufacturing with Non-metallic Materials

Injection Molding Simulation Using LabView

Graph

Controls within this portion of the interface deal with the accuracy and resource usage of the VI's. This section also is responsible for all output from the Injection Molding simulation.

Graph	The graph shows the Pressure versus Distance curve for the selected Die/Extruder combination. Accuracy of the graph is controlled via the Graph Steps and Time Step controls shown below.
Graph Steps	The GraphSteps slider controls the number of iterations used in solving the die and extruder equations at each time step. Increasing this number increases the numerical accuracy of the resultant operating point, but at the cost of increased resource usage. The value of this control may range from 1 to 2000, with the default being 1000. If the graph seems to 'stairstep', then this value should be increased.
Time Step	The TimeStep slider controls the number of steps used in solving the injection molding equations. Increasing this number increases the numerical accuracy of the resultant operating point, but at the cost of increased resource usage. TimeStep may be thought of as the amount of time between each point on the graph. The value of this control may range from 1.0E-8 to 1.0E-5, with the default being 5.0E-6. If the graph seems to 'stairstep', then this value should be decreased.
Distance Covered	The Distance Covered display shows a running count of how far the fluid has progressed through the Die, as the simulation runs. If this value exceeds the total die length by an intolerable amount, a decrease in the Time Step will correct the situation.