Steps for setting Fatigue analysis inside Solidworks

This feature inside Solidworks is very useful since it enables designers determine the stresses that may lead to fatigue failure in a part. This is quite crucial in design of structural elements especially those that are subjected to very heavy loads over a period of time. Solidworks with its multiple simulation capability is once again able to do this simulation with ease.

I will do a T section for this demonstration.

fatigue analysis inside solid works


    Once you are at the Solidworks simulation tab click on new study and select the fatigue analysis.

Fatigue analysis inside Solidworks You will notice that you are required to run at least one static analysis on the part before you run this analysis.

Fatigue analysis inside Solidworks

 

We can therefore start by setting a simple static analysis of the part. We create a new study and select static study.

As with all static analyses we are required to first define our Material then our loads and fixed supports. The processes in the feature manager tree are sequential.

I went with an initial 10KN force exerted on the top of the member while fixing the lower part.

Fatigue analysis inside Solidworks

After doing this I ran the mesh analysis of the part.

Fatigue analysis inside Solidworks

After this I ran the analysis.

Fatigue analysis inside Solidworks
With this we see that the structure does not automatically fail on the first application of the load. We therefore are required to run the fatigue analysis to determine the life of the product

This fatigue analysis is pretty useful in determining the life of a product and it does this by running the simulation for quite a number of cycles.

Once you click on fatigue analysis you can notice that at the bottom you are given a chance to choose the terms to which you want the fatigue analyses to be run. I went with a constant amplitude event with defined number of cycles for this demonstration.

Fatigue analysis inside Solidworks

 

Fatigue analysis inside Solidworks

I went with 100 cycles with a zero base simulation. Next you define the SN curve using data derived from the elastic modulus

Fatigue analysis inside Solidworks

 

Fatigue analysis inside Solidworks

The fatigue analysis tool shows its usefulness in product development and it can be run alongside other static studies like thermal and linear dynamic analysis.
Contact us for more information and buying SolidWorks at support@nccs.com.au or call 03 86770871