Transient Structural: Flipping the contact/target faces of a frictional contact changes the results
I'm running a pendulum analysis (Structural Dynamics course in Ansys Innovation Courses).
The goal is to study the motion of the pendulum while a frictional contact is causing damping to the motion of the pendulum. However, I noticed that flipping the contact and target faces affects to the results quite a lot.
-Remote Displacement fixes all 6 DOF of the face of the pin.
-Gravity applied to the Global +Z direction.
-The frictional contact has been defined between the pin and the pendulum. The coefficient of friction is 0.1.
-Total Deformation result: The graph shows that the motion of the pendulum dampens fast after the first oscillation.
-Contact definition (contact and target faces flipped):
-Total Deformation result: The oscillation of the pendulum dampens remarkably slower.
Any ideas what causes this difference between the results when contact/target faces are flipped? Which way should the contact/target be defined? Does this same effect apply also in Static Structural analyses and contact definition between contact and target faces should be done specific way there too?