Define the first plastic bending moment behavior for frame elements.
This option can be used only in conjunction with the FRAME SECTION option. It describes the bending moment in a frame element as a function of the plastic rotation about the first cross-section direction.
There are no parameters associated with this option.
Data lines to define the variation of yield moment M10 with plastic rotation
First line
Bending yield moment about the first cross-section direction.
Plastic rotation about the first cross-section direction.
Repeat this data line as often as necessary to define the relationship between the bending moment and the plastic rotation about the first cross-section axis. At least three pairs of data are required.