The customer create a 1D connection with BUSH and BUSHT property in SC.
He wants to control how to fill the values out of frequency range.
Solution
In Pre/Post, you can use the options in the Values Outside Table list in the Table Field dialog box to control whether Nastran extrapolates the starting and ending data points.
https://docs.plm.automation.siemens.com/tdoc/nx/1847/nx_help/#uid:xid1205532
Notes