Physics Setup

Recall that during the Start-Up step, we added a material with the desired values of Young's modulus and Poisson's ratio. This just added the material to the list of materials available within this project. We need to assign this material from the material list to the model as shown in the following video. Otherwise, ANSYS will use the Young's modulus and Poisson's ratio for structural steel which is the default. This step is easy to overlook.

<iframe width="600" height="338" src="//www.youtube.com/embed/Z5RX8lpcWhc?rel=0" frameborder="0" allowfullscreen></iframe>

Summary of the above video:

Under the tree, highlight Geometry and click on the part in interest (Bike Crank)

In Details window, under Material, change Assignment to Al 6061

Next, we apply the boundary conditions i.e. displacement constraints at the 3 left holes and traction on part of the right hole. Boundary surfaces where we neither apply a displacement constraint nor traction are assumed by ANSYS to be free surfaces with zero traction.

<iframe width="600" height="338" src="//www.youtube.com/embed/zJCJFvkYchw?rel=0" frameborder="0" allowfullscreen></iframe>

Summary of the above video:

Under the tree, highlight Static Structural

Click Supports > Fixed Support

Zoom into the region with the three holes and highlight all three holes > apply

Now zoom into the hole on the opposite end

Click Loads > Force > Highlight the inside facing circular hole > Apply

Scroll down to Y Component and enter 100

Go to Step 5: Numerical Solution

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