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hello i calculate period of a steel moment frame by eigen command and i use equalDOF command for diaphragms in 2 ways (if node 1 ,2 ,3 and 4 are in the same story level). first way: equalDOF 1 2 1 equalDOF 1 3 1 equalDOF 1 4 1 and second way: equalDOF 1 2 1 equalDOF 2 3 1 equalDOF 3 4 1 the eigen co...

hello i have a few questions about p-delta effects and i would be tankful for your answers and helps. 1) is there any other way except lineanig column for modeling p-delta effect? 2)can leaning column (p-delta effect) affect frame periods?in leaning column no mass assign to it nodes and it columns a...

thank you for help but just last question. i used Ik model because i can easily calculate every parameter even parameters of degredation according to Lignos and Krawinkler (2011).But I have no experimental data for calibration of steel02 or hysteretic material and i have no idea how to calculate the...

i try both ,the same problem #Unit n/cm2 1)uniaxialMaterial Steel02 $secID 28800 20000000 0.02 15.0 0.925 0.15; 2)uniaxialMaterial Steel02 $secID 28800 20000000 0.0001 15.0 0.925 0.15; seriously i dont know this is a proper material (with these parameters) for modeling columns in a moment frame or n...

Hello i want to calculate R,Cd and omega_0 parameters of a Steel Moment Frame according to FEMA-P695 i used IK-model with concentrate plasticity(plastic hinges) for beams elements according to Pushover_concentrated example and i used dispBeamColumn with fiber section and steel02 material for columns...

Hi I try to use Static pushover analyze for a steel moment frame. My problem is in columns nonlinear modeling. I use dispBeamColumn element and fiber section with steel02 material for columns. (Here is the part of code which builds the fiber section for columns) #bf: flange width #tf: flange thickne...

hello Mr mehdikhani
would you mind helping me to find this book
i cant find it any sources