The OpenSees Community

Hi,
how can i divide the beam-column element into different sub-element for the nonlinear analysis

yes, i applying large displacement. this is the following code wipe; # clear memory of all past model definitions model BasicBuilder -ndm 3 -ndf 6; # Define the model builder, ndm=#dimension, ndf=#dof set LCol [expr 13.5*$ft]; # column Length (parallel to Y axis) 13.5 ft puts "Length of column ...

HI,
I am doing Pushover analysis by using lumped plasticity model (Ibraa model). when I am plotting a graph of base shear versus roof displacement i am getting an only linear curve, my curve is not going into nonlinear range.

hi, thanks for the reply can u tell me how to define the dof for zerolength element in 3D case. Actually, In the example posted on the website for the pushover analysis, the direction defined is 6 for the moment-rotation relationship for plane frame element. How the definition of direction will diff...

hello everyone I have modelled a space frame using 3d element concentrated plasticity element (Modified ibaraa model), during gravity analysis following error has occurred WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 4 WARNING NewtonRaphson::solveCurr...