By importing the tutorial project, a new project will be created for you, and the ‘Workbench’ will open with the prepared tutorial geometry already loaded into the viewer.
To create a new simulation, click on the “+” button next to ‘Simulations’ in the tree or the “Create Simulation” button on the geometry panel.
Select the “Static” analysis type and click “CreateSimulation“.
A new simulation tree containing all parameters and settings needed to define the conditions of the analysis will be created.
All setup steps that are completed are highlighted with a green check. Steps that require some user input are shown with a red circle. Steps that have a blue circle indicate optional settings.
Give an appropriate name to the Simulation. Example: Static-Stress-Analysis
The geometry is automatically assigned to the simulation
Material can be assigned to the geometry by selecting the “Materials” from the simulation tree
A selection of materials can be chosen and click “Apply” to confirm operation
For our simulation, we’ll only assign two boundary conditions: A pressure load at the lower end and a fixed support at the top end of the connecting rod.
Depending on the analysis type we chose, there would be even more boundary conditions available
We will start with the force boundary condition
So we click on the “+” button to add a new Boundary condition
Automatically, a new boundary condition called ‘boundary condition 1’ is created
First we’ll give it the meaningful name Pressure-Load for our reference
Set the value for pressure as 20.000.000 Pa which is around 20 bar
To complete the boundary condition setup, we have to choose on which faces this boundary condition shall be assigned to
So we select the two of the inner faces at the lower end of the connecting rod
This completes the pressure boundary condition which is indicated by the green check in the tree item of the boundary condition
Similarly, a fixed constraint boundary condition is defined at the top of the connecting rod
To do this, a Fixed value boundary condition is selected and all displacement values are set to zero, which indicates that these faces are not allowed to move
The tree item Numerics allows us the control the solving mechanism in detail, where default values are left as such for this case
The next important tree item is Simulation Control which allows to steer the overall simulation settings – however in our case, we will leave everything as it i
For this tutorial, the default mesh settings are sufficient to get a good quality mesh
Click on the Generate Button to start the meshing operation
The Job Status box in the bottom left corner will show the progress of the operation
The mesh immediately appears in the viewer and we can see the small elements that have been created
Mesh Refinements can be added if there are specific regions that need to be observed in more detail.
Now the simulation setup is complete and you’re ready to start your simulation. To begin the simulation, a simulation Run needs to be created. A simulation Run creates a snapshot of the current setup and tries to compute the results based on the snapshot settings.
To create a new Run, click “+” next to Simulation Runs. Name your simulation and click on “Start“.
Computation of the results can take up to a few hours. You’ll be informed via email once your simulation run is finished. Once finished, you’re ready to analyze the results.
Next we will visualize the results of the simulation we just completed
Click on the Post-process Results button to load the results on the viewer
For example, to check the von Mises stress on our model, click on the Results and then select the von Mises stress fron the Scalar list below.
We can use further post-processing filters to generate a different visualization of the connecting rod according to the computed displacement field
A list of all the available filters can be seen on the left side.
Congratulations! This concludes this connecting rod stress analysis tutorial.
Last updated: April 2nd, 2020
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