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In my model, I made 5 integration points.
Do the points divide the column or beam equally?
Is the Gauss Intergation used here ?

My model is a 5-story 3-bay frame. I want to ues force control analysis. However, there is always problems when I run the model. Here is the warning in dos: so ,what may the reason be?could you see my model? Running Pushover... WARNING - ForceBeamColumn2d::update - failed to get compatible element f...

As the subject, must pushover use displacement-control?
may it use force-control ?

In my model, the section is elastic, and the element is nonlinear. Therefore, it should always be excuted no matter the value of the control displacement.
But, the result is quite different from my conceiving. Could you check my model, please, I donnot know what's wrong with it.

Thank you.

In section elasitc, whose E is involved? I guess it is concrete's, but I am not quite sure.
section Elastic $secTag $E $A $Iz <$Iy $G $J>

To draw a bending moment diagram ,
now I record the moment of resignated section, then, I draw the diagram with the recorded results. I think this kind of inaccurate mothod is inefficiency .
Do you have a better idea?

I want to draw the moment bending diagram, but I am confused about the relationship of signs and the direction of the moment bending. Is positive value represents the section is in tension, and the negtive value represents the section is in press ? but how to decide which side when just know the sig...

My model is a two-story one-bay frame. I used the element elasticbeamcolumn, now I want to record the force of some sections along the beam and column. How to ? the program runs well, but the output file is no content. I tried in this way ,but it didn't work. recorder Element -file $dataDir/Fcol1111...

I used displacement- control analyse,
Is there any example in which force-control is used?

I think, my model is a nonlinear model. therefore,the displacement of each floor is differernt,. However, the displacement -control just involves one node in the topmost floor, which is not very accurate.

[quote="vesna"]You can not record shear strain if you did not assign shear force-deformation relationship to your section. One of the ways to do it is to use Section Aggregator command to assign shear force-deformation relationship to the section.[/quote]

Oh, that's it. Thank you for your patience.

[quote="vesna"]Yes, the three columns of data you are getting are time, axial strain and curvature. In order to record shear strain you have to assign shear force-deformation relationship to your sections.[/quote]

I donnot quite catch you, could you explain more?

[quote="vesna"]Section deformations are axial strain, curvature, shear strain, but not hinge rotation.[/quote] so, what are the three columns of data respectively I got ? recorder Element -file $dataDir/ele111sec1.out -time -ele 111 section 1 deformation; Are they :time, axial strain, curvature ? Th...

[quote="vesna"]If in 2D your PlasticDeform.out will have 4 columns of data: time, plastic strain, plastic rotation at node i, and plastic rotation at node j.[/quote]

As the title ,thank you very much.

[quote="r0d4n"]Hi ninashnash, elastic case: you can get the rotation from nodal recorders of the i-j nodes and the forces from: recorder Element -file ele1local.out -time -ele 1 localForce (or globalForce according with global coordinates) fiber beam-column element case: recorder Element -file $outp...

what is the specific meaning of section deformation? Is the hinge rotation revelant to it ?