Transient Structural: Flipping the contact/target faces of a frictional contact changes the results

NikkeNikke Member
edited October 19 in Structures


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.


-Contact definition:

-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?


Best Answer


  • NikkeNikke Member

    Thank you @jjdoyle,

    I did the mesh refinement and the results match each other now way better. :) Thank you also for the advice with contact settings.

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