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5
Robustness Analysis
• The user can test the sensitivity of the simulation to variations of some
critical parameters
- Material parameters: R-values, hardening, and yield
- Geometrical parameters: blank thickness, and orientation of the blank
- Forces: friction and binder force
• The user provides the standard deviation provided for those
parameters and connects with the LS-OPT executable
Definition of the testing parameters
• Ansys Forming automatically sets up the Robustness Analysis with
LS-OPT
• Advanced parameters of the design of experiments and post-
processing can be done within LS-OPT
Response surface of the maximum percentage of thickness reduction
Bar plot of the
variation
of the maximum
percentage
of thickness reduction
