Convergence problem in ANSYS Workbench

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SUMMARY

The forum discussion addresses a convergence issue encountered in ANSYS Workbench, specifically when the solver engine fails to converge on a solution for a nonlinear problem. The primary advice provided emphasizes the importance of adequately constraining the model to prevent uncontrolled rigid body motion. Suggestions include implementing contact sets to manage necessary rotations or translations effectively. The discussion hints at the context of the problem, possibly related to chuck mechanisms in roll handling equipment.

PREREQUISITES
  • Understanding of ANSYS Workbench 2023 interface and functionalities
  • Knowledge of nonlinear problem-solving techniques in finite element analysis
  • Familiarity with constraints and contact sets in mechanical simulations
  • Basic principles of rigid body motion in engineering mechanics
NEXT STEPS
  • Explore methods to implement contact sets in ANSYS Workbench
  • Research techniques for constraining nonlinear models effectively
  • Learn about troubleshooting convergence issues in ANSYS simulations
  • Investigate the role of rigid body motion in finite element analysis
USEFUL FOR

Mechanical engineers, simulation analysts, and anyone involved in finite element modeling using ANSYS Workbench who is facing convergence challenges in their simulations.

Elementalnature
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Hi, i solved a model but i got an error saying that "The solver engine was unable to converge on a solution for the non linear problem as constrained". Can someone offer advice on how i can fix this error?

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It sounds like you have not adequately constrained the problem. You need to avoid uncontrolled rigid body motion as much as possible. If some rotation or linear is required, you need to constrain it somehow, possibly using contact sets. Is this some type of chuck on a roll handling equipment?
 

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