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LindaBPolk, the beam I was studying is a rectangular beam, which is a part of a fixed suport portal frame. The section of the beam is uniform i.e. no reinforcement is used.

I used nonlinearBeamColumn element.

Hi,
I was studying the stresses in the sections of a beam. The stress-strain outputs changes with the number of subdivisions ( fibers ) in the section.
How can I know at what number of subdivisions ( fibers ) the outputs will be correct ?

Thanks.
The stress-strain outputs changes with the number of subdivisions ( fibers ) in the section.
How can I know at what number of subdivisions ( fibers ) the outputs will be correct ?

Hi, I tried to get the stress across a section of a beam using element recorder ( stress-strain response ). The beam is a rectangular one. So, the C.G. is at midpoint along the depth. Hence , at the midpoint along the depth of the section the stress should be zero. But, in the output it is not comin...

Hi, I used dispBeamColumn element for all the members of a fixed suppport portal frame. In the results the member end moments are coming correct, but the section forces at the integration points of the beam are coming wrong ( wrong in the sense that the values of bending moments at all the sections ...

The example is as below- # Basic units are newton, metre and second wipe ; model BasicBuilder -ndm 2 -ndf 3; set dataDir Data; file mkdir $dataDir; set GMdir "GMfiles"; node 1 0 0 node 2 0 4 node 3 2 4 node 4 2 0 fix 1 1 1 1 fix 2 0 0 0 fix 3 0 0 0 fix 4 1 1 1 uniaxialMaterial Elastic 1 20...

Hi, I used dispBeamColumn element for all the members of a fixed suppport portal frame. In the results the member end moments are coming correct, but the section forces at the integration points of the beam are coming wrong ( wrong in the sense that the values of bending moments at all the sections ...

Hi, I used dispBeamColumn element for all the members of a fixed suppport portal frame. In the results the member end moments are coming correct, but the section forces at the integration points of the beam are coming wrong ( wrong in the sense that the values of bending moments at all the sections ...