Moment curvature analysis of composite beam

[Manya]

I have modeled my composite beam with steel w-section and concrete slab separately i.e by giving two different section properties.(secTag1 and secTag2).Is there anyway I can do Moment curvature analysis of entire composite beam.As far I understood moment curvature can be done for individual sections.But am not quite sure how to get moment curvature of the composite beam as a whole.Can anyone please help me out with this.Thankyou

[rafetsisman]

I think you can define your composite section with partch and fiber commands just like the moment curvature example for reinforced concrete section. I mean, you may define slab with concrete patches and steel fibers (reinforcement) and steel beam with steel patches as a whole.

Rafet

[fmk]

what you are asking makes no sense .. a moment curvature relationship is by definition the force-displacement relationship of a section .. the force-displacement relationship for a beam IS NOT a moment-curvature relationship.