Rigid Body Stops Motion UDF

Is it possible to confine motion using a UDF. Similar to the below tutorial, skip to 3:26 to see the UDF:

Except where gravity is used in the tutorial above, I'd like to define something similar to joint motion in Structural. For example, a rigid body will only be allowed to translate 3  mm on the x-axis.


  • RobRob UKForum Coordinator
    edited April 2019

    If you're using UDFs you can do pretty much anything you want: can you sketch out what you're wanting to do? 

  • learn13learn13 Member
    edited April 2019


    Thank you for your reply. My solution came from further digging into the Ansys v.19 capabilities.

    V.19's 6DOF tools allow specification of rigid body rotation/translation and constraints of that motion. I incorrectly referred to Fluent's constraints as stops because of prior experience with the joint tools in Structural. 

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