ANSYS Workbench: revolute joint problem

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SUMMARY

The discussion focuses on a structural static analysis issue in ANSYS Workbench where a revolute joint is incorrectly functioning as a fixed joint. The user attempted to connect object 2 to object 1 with a revolute joint to allow for rotation, but it failed to rotate around the joint axis. An alternative method using frictional contact was partially successful, but rotation ceased when object 2 lost contact with object 3. The problem was ultimately resolved by correcting the reference coordinate system, specifically the Z axis alignment.

PREREQUISITES
  • Understanding of ANSYS Workbench for structural analysis
  • Knowledge of joint types, specifically revolute joints
  • Familiarity with coordinate systems in 3D modeling
  • Experience with contact definitions in finite element analysis
NEXT STEPS
  • Review ANSYS Workbench documentation on revolute joint configurations
  • Learn about setting up and troubleshooting coordinate systems in ANSYS
  • Explore frictional contact modeling techniques in finite element analysis
  • Investigate best practices for dynamic simulations in ANSYS Workbench
USEFUL FOR

This discussion is beneficial for structural engineers, ANSYS users, and anyone involved in finite element analysis who needs to understand joint configurations and coordinate system setups in simulations.

tl_ccc
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Hey folks,
I am doing a structural static analysis in ANSYS Workbench. A problem has troubled me for several days. Here it is: I would like to connect object 2 to object 1 by a revolute joint, which allows 2 to follow the movement of 1 and to rotate around this joint at the same time (under the effect of a spring pressed on 2, and the effect of an object 3 which is initially in contact with 2). The revolute joint is correctly defined, but it works as a fixed joint, which means 2 follows the movement of 1, however it cannot rotate around joint axis as defined.
I tried another method to create the model, by replacing the revolute joint by a frictional contact between the cylindrical surfaces of object 1 and 2. When object 2 is in contact with 3, the model works well (2 follows the movement of 1, and it rotates). However, when object 2 is no longer in contact with object 3, it moves but doesn't rotate.
Do you have any ideas what is wrong in my model? How could I realize the connection? (by revolute joint or frictional contact)
Thank you in advance.
 
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Solved! I didn't check the reference coordinate system. The Z axis was wrong.
 

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