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In the previous tasks, you prepared the tutorial model for analysis. You selected a material, designed a multi-cavity mold, and modeled the runner system and cooling system.
In this task, you will:
- Examine the information generated by the analysis.
- Examine the graphical representation of the analysis results.
- Determine the result value at a selected point on the mold.
- Look at a brief description of some of the major results.
- Ensure the Modeling tutorial project you created in task 1 is open.
- Click ( ).
- Click on the model drop-down arrow to see the list of supported file types.
- Select Study files (*.sdy).
- Navigate to the Tutorials folder where the software is installed, typically C:\Program Files\Autodesk\Simulation Moldflow Insight xxxx\tutorial.
- Click the file model_4_analysis.sdy and click .
In this study, a Fill analysis has been completed on the model from the previous task and results are available for review.
- Select from the Study Tasks pane to show the Logs pane.
There are five tabs across the pane.
- The Mesh Log tab summarizes any mesh alterations undertaken in the study with the parameters used to generate the mesh. As there have been no alterations, this tab is blank.
- The Analysis Log tab records the analysis inputs, the progress of the analysis, and some key results. If any warnings or errors occurred, they are displayed in the Analysis Log. There is a warning about the low mesh match percentages. We made a decision in an earlier task to maintain the low mesh ratio.
- The Filling tab presents the analysis inputs and the summary results, including bulk temperature, shear stress, and frozen layer fraction at the end of the filling stage. The low mesh match percentage is also reported in this tab.
- The Machine Setup tab outlines the processing parameters used for the analysis. This includes the material used, the machine specifications, and temperature and injection settings that should be used on the injection molding machine.
- The Filling-Check tab presents the results of the checks performed at the beginning of the analysis.
Once an analysis is complete, a selection of results are made available in the Study Tasks pane. For a Fill (or Fill+Pack) analysis, the results appear in a Flow folder. If a different Analysis Sequence were selected, Fill + Cool + Fill+Pack + Warp for example, there would be additional folders for the results of the analysis types undertaken.
The Fill analysis that was run in this study was based on the default process settings for the selected material. You can edit these default process settings in the Process Settings Wizard to reflect the actual manufacturing settings. To do this, double-click in the Study Tasks pane. Alternatively, click . If you change process settings, you must run the analysis again to see the results.
Most of the results of the analysis are listed in the Study Tasks pane.
- To view one of these results, click the checkbox next to the result name in the Study Tasks pane. The result will be displayed graphically in the Model pane.
To view the exact value of a result at any location on the part, click
, and click one or more locations on the model.
- To view the full list of results from the analysis and/or create a customized version of any of the results, click .
You will look at altering the format of these plots in the Postprocessing tutorial.
Autodesk Simulation Moldflow Insight gives detailed information about the part design, material, and processing conditions used in the simulation.
Some of the Fill analysis results available are listed below.
- Fill Time
The Fill time
result shows the flow path of the plastic through the part. This result can be animated against the time required to fill the part.
- Pressure at V/P switchover
result shows the pressure distribution through the flow path inside the mold at the switchover point from velocity to pressure control.
- Average velocity
The Average velocity
result plot displays the flow direction, and the average magnitude of velocity of the polymer inside the mold cavity.
- Orientation at core
The Orientation at core
result is created at the end of a filling analysis and provides a good indication of how molecules or fibers would be oriented at the part core when using a fiber-filled material.
- Time to reach ejection temperature
The Time to reach ejection temperature
result shows the time taken for the part to freeze to ejection temperature, measured from the start of the cycle.
- Bulk temperature
The Bulk temperature
result displays the weighted average temperature across the thickness of the part at the time the result was written. Bulk temperature represents the energy that is transported through a particular location.
- Weld lines
The Weld lines
result indicates the presence and location of weld in the filled part model. Weld lines appear as black lines on the model, and can indicate weakness. To see all of the weld lines, you may need to rotate the model.
- Air traps
The Air traps
result shows the regions where the melt stops at a convergence of at least two flow fronts, or at the last point of fill. The regions highlighted in the result are positions of possible air traps. To see all of the air traps, you may need to rotate the model. Air traps appear as large red outlines on the model.
The Fill Time and Pressure results are good starting points when checking the results of an analysis. They will show you where there may be filling or pressure distribution problems associated with the part design. If problems are indicated, you may need either to change the part design or use a different combination of material and processing conditions.
The results in this study indicate a good fill pattern and part design.
Click the Next topic link below to move on to the next task of the tutorial.