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How to Post Process FEA Results

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FEA analysis tool results          FEA analysis is the best modern day tool to design advanced engineering products that are superior in every way. FEA allows for designs to be stronger, longer lasting, more chemical resistant, and more heat resistant than ever before. Once you have run your FEA model, how do you get to the results? Each FEA program has different options for the results it can solve for. In addition, depending on the type of analysis there are many different results you can post process as well. If you are confused about the options available to you follow the steps below to post process your FEA results.






Step 1

FEA Structural AnalysisThis step deals with finite element structural analyses. If you have performed a structural analysis, load the results. You can then view the following results: Von Mises stress, strain, and deformation. You can view each of these along individual axes or all combined in one plot. Stress can be viewed in different units such as pascals, megapascals, or pounds per square inch. Deformation can usually be viewed as a length such as inches in a certain direction such as the Y axis. Strain is defined as change in length over original length. So this will be a small decimal number usually.

Step 2

FEA Thermal AnalysisNow view thermal analysis results. Once you load the results file you will see temperature distributions throughout your model. You can view these temperature distributions as color variations in either degrees Celcius, Fareinheit, or Kelvin. In addition to temperature variations you can plot heat flux throughout your model. Heat flux is the rate at which heat is transferred through the model.



Step 3

In a modal analysis you can view the mode shapes and frequencies of vibration of your solid model. The mode shapes can be post processed with a video utility that shows how the object vibrates with time. You can usually select how many modes you want to view in the post processing tool.


Step 4

Finite Element AnalysisWith a CFD FEA analysis there are many post processing options. You can access information such as pressures within your model, mach numbers of fluid flow, velocities, and temperatures. One can even track the movement of a simulated fluid particle through the flow path of your design.




Step 5

Animation is becoming a more and more popular option in finite element analysis post processing tool software. Animation allows you to view the changes in your results file over time. For example you can view how the stress is generated in your model as the model is loaded.



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