Cyclic Displacements in ANSYS Workbench

[umatrix]

Hello Eng-tips,
I have a simple part and would like to conduct a fatigue study with displacements (cycle 0.3 mm to 0.27 mm) rather that loads. I am lost on how to get started.
I have attached a schematic of the details.

Any help would be appreciated.

 

[NRP99]

jmatrix

Your problem is not clear. What are your difficulties exactly?

Simple stress life approach- Do two step linear static structural analyses with 0.3 mm displacement load and 0.27 mm displacement load. You will get the range of the stress(max minus min) from which you can do fatigue life calculations.

 

[goeasyon]

This looks like a two-body structural analysis with a contact surface. Here are steps that you could try: (assume geometries have been imported/created, and meshing is completed)
1. assign material to each body
2. add a contact pair object and define the target and contact surface
3. add a fixed boundary to the top body
4. add a displacement boundary to the lower body.

For the fatigue solution, you could add fatigue result object and evaluate.

https://welsim.com