Welcome to 3DCADForums

Join our CAD community forums where over 25,000 users interact to solve day to day problems and share ideas. We encourage you to visit, invite you to participate and look forward to your input and opinions. Acrobat 3D, AutoCAD, Catia, Inventor, IronCAD, Creo, Pro/ENGINEER, Solid Edge, SolidWorks, and others.

Register Log in

Stewart platform: How to perform a rigid bodies analysis


New member
Hi everyone,

I’m a CATIA beginner (never touched it before Tuesday) and I’m trying to perform the following static force analysis on a Stewart platform I finished designing this morning:
  • Apply a downwards force on the top plate
  • Measure the reacting force in each cylinder

My Stewart platform. Somewhat wacky, but it moves well.

I’m not interested in stress analyses for the moment; this is just to figure out which forces need to be generated by the six linear actuators to counter a given load on the top plate.

The kinematics work out fine, but I’m struggling to figure out how to perform this simple analysis. I’ve found quite a bunch of tutorials dealing with stress simulation, but I can’t find anything dealing with this simple rigid bodies problem.
Does anyone know what I should do or know a tutorial on the matter?

Please let me know if I wasn't clear enough.