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i think it means, rotation of end of i minus rotation end of j

this is my problem too, please help us

Dear fderakhshan
can you explain how you found the location of first plastic hinge?
if you have any file, if it possible please mail me sabir_lotfi@yahoo.com

this topic was very interesting for me but i have 2 question: 1: can we say, chord rotation=(theta) y +(theta) plastic 2: this question may be unrelated to the topic but: for calculating the Rotation, can we say Pl*Curvature? then how is Pl? i think for this we have determine the Pl previously, is i...

dear caosasa would you plase send the pdf to me ? sabir_lotfi@yahoo.com thanks """and do you find the ways to calculate plastic rotation form curvature and plastic hinge length?"""""" please told me do you find the answer of question 2 (how can i use curv...

Hi dear Vesna/Silvia I have an 7 stories steel model (MRF) i want to calculate the maximum rotation in beams and columns, i want to calculate the ductility of elements, i use the nonlinear time history analysis. i used the following recorder: recorder EnvelopeElement -file $file/col10rotation.out -e...

Hi all dear all, in my research i used nonlinearBeamColumn for elements to do nonlinear time histroy analysis under victoria earthquake, the response were very big, then i used element dispBeamColumn, the responses was rational. my question is, why when i used the nonlinearBeamColumn element for oth...

you can calculate the area of under diagram of hysteresis curve.
but any one know what order we have use?

is their any one to answer my question?

Hi all
how we can calculate the Park and Ang damage index?
is any code about it?
Regards

thank you can you explain the duty of recorder basicdeformation?

hi all i'm new user of opensees. i want to calculate the plastic hing rotation or maximum theta in ends of beams or calumns, to calculation the rotation ductility. but i dont now what command i have to use? please explain the basicdeformation command? and does opensees only calculate the curvarture?...