Hi,
What you noted can be true. Please refer to the following note from Ansys help:
Note: The FRAC calculator feature is removed from the current release. The methodology adopted for FRAC calculation in the previous release has some drawbacks as per research literature. Work on implementing improved methodologies is in progress and this feature will be available again in a future release.
2.5. FRF Calculator (ansys.com)
How to access the ANSYS Online Help
Regards,
Ashish Khemka
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