g.alshamsi
Civil/Environmental
Hello all,
I have a cold-formed steel portal frame that I want to analyze under monotonic pushover and non-linear time history analysis.
The sections in my frame are made of built-up hat sections. I have successfully modeled the built-up studs using the section designer option, however I can't seem to define/assign hinges to the frame. For reference I want to define a plastic hinge (P-M2) from the material properties of the element. When I try to assign the hinge, I get the following error:
"Error in assigning hinges. Requested calculated properties may not be available for material or section type."
If I change the frame section to a built-in hot rolled section, I can define the hinge without any problem. I guess a work around is to change the section modifiers to get an equivalent section. But does anyone have any idea why I can't assign a hinge to my built-up sections?
Thanks,
I have a cold-formed steel portal frame that I want to analyze under monotonic pushover and non-linear time history analysis.
The sections in my frame are made of built-up hat sections. I have successfully modeled the built-up studs using the section designer option, however I can't seem to define/assign hinges to the frame. For reference I want to define a plastic hinge (P-M2) from the material properties of the element. When I try to assign the hinge, I get the following error:
"Error in assigning hinges. Requested calculated properties may not be available for material or section type."
If I change the frame section to a built-in hot rolled section, I can define the hinge without any problem. I guess a work around is to change the section modifiers to get an equivalent section. But does anyone have any idea why I can't assign a hinge to my built-up sections?
Thanks,