The Runner Balance Analysis is used to determine the optimum volume for the sections of the runner system. This analysis ensures that the part fills evenly and there is an acceptable pressure magnitude in the cavity, minimizing runner volume.
Runner systems should be balanced to reduce overpacking during the filling phase. During a Runner Balance analysis, the runner system dimensions are altered to ensure that parts fill simultaneously and the volume of the feed system is minimized.
A well-balanced runner system can make considerable savings in material usage. Before performing a Runner Balance analysis, you should check the Fill analysis and ensure that you are satisfied with each of the following:
The Runner Balance analysis is for a model with an attached runner system. A runner system that is added after a Fill+Pack analysis helps you balance the cavities. The aim is to achieve runner dimensions with the following characteristics:
When you launch a Runner Balance analysis, a new study is automatically created in the Project View pane. When the Runner Balance analysis is complete, the results, including the balanced dimensions and a completed Fill analysis, are associated with the newly created study.
The Runner Balance analysis is used to determine the optimum volume for the sections of the runner system.
Use this dialog to specify settings for a Runner Balance analysis.
During a runner balance calculation, runner dimensions are altered within, or as close as possible without affecting the balanced fill, any constraints set, to ensure that cavities fill at the same time and that the volume of the runner system is minimized.
For a Runner Balance analysis to determine the correct runner dimensions for balanced flow to multiple cavities, you need to specify the maximum size to which the runners can be resized.
Runner balancing is performed as a conditional minimization of a criterion function, calculated using the results of a Fill analysis.