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For SteelBRB material, the command is: uniaxialMaterial SteelBRB $matTag $E $sigmaY0 $sigmaY_T $alpha_T $beta_T $delta_T $sigmaY_C $alpha_C $beta_C $delta_C <Tol> ; where the meaning of each parameter can be found from http://opensees.berkeley.edu/WebSVN/filedetails.php?repname=OpenSees&path=%2F...

hi,I have built a 3D model ,when I want to get the eigenvalue use the command like : puts [eigen 1] eigen frequency 1 recorder Node -file $data/eigenvectors1.out -iNode $SupportNodeFirst -jNode $FreeNodeID -dof 1 "eigen 1" set outfile [open "eigenvalues.txt" "w"] set ei...

Hello all. Can we extract the assembled stiffness matrix of the model when we do ststic pushover analysis? If can,how to make it in each step in pushover analysis? Also,can you give me some idea or suggestions on how to define a section(beams and column) failure? If we have the definition of section...

Excuse me, can you send the example of static reliability analysis to me(baijiulin@126.com)?please,thank you!

Hi,all
I have a problem when i use the element beamWitnHinges,how could I get the value of E(Young's Modulus)? E is the concrete's E or the combination of concrete and the steel bars?







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Bai Jiulin
HIT, China