Rigid Dynamics and Magnetostatic Studies

- June 13, 2019 at 10:52 am
  
  apmmadonna
  Subscriber
  
  Hi All,
  
  I am fairly fresh to ANSYS and I would like to know how to conduct a rigid dynamics and magnetostatic study simultaneously within ANSYS.
  
  The general principal is that the assembly has 4 springs with magnets fixed at either end and when the springs are compressed due to a force applied the magnets fixed at either end repel each other.
  
  The output ideally should be a force vs displacement curve.
  
  Thanks in advance.
- June 13, 2019 at 12:48 pm
  
  peteroznewman
  Subscriber
  
  Please reply with an image of the mechanism inserted into the post.
  
  If you want a Force vs Displacement curve, that might best be done in a Static Structural model, not Rigid Dynamics.
  
  Do you have all the magnetic properties of the materials involved in the magnetic model?
- June 15, 2019 at 5:40 am
  
  apmmadonna
  Subscriber
  
  Hi Peter,
  
  I have attached some photos of the system in its ideal start and end position.
  
  Yes i do have the magnetic properties.
  
  This is the assembly start:
  
  This is the compressed end point:
  
  Thank you
- June 16, 2019 at 12:04 am
  
  peteroznewman
  Subscriber
  
  Have you solved the magnetostatic model to obtain the magnetic force as a function of position of the small plates? If so, you can insert a COMBIN39 spring and program it with the magnetic force vs displacement data to simulate the magnetic force in this mechanism. You could then simulate the rest of the mechanism in a Static Structural analysis. I don't know if this COMBIN39 nonlinear spring works in the Rigid Dynamics solver. It does work in the Transient Dynamics solver.