Modelling an Infill frame

If you have a script you think might be useful to others post it
here. Hopefully we will be able to get the most useful of these incorporated in the manuals.

Moderators: silvia, selimgunay, Moderators

nrojas
Posts: 15
Joined: Tue Nov 10, 2009 4:27 am
Location: University of Puerto Rico

Modelling an Infill frame

Hi !!!!

Can any body tell me how I can model an Infill frame? I have tried using a diagonal truss element with an uniaxial material specified for the behavior of the infill wall but it is not following the envelope of the material.n There is another way to achieve that? Can somebody help me?

fmk
Posts: 5866
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Re: Modelling an Infill frame

there is an example in the examples:

http://opensees.berkeley.edu/wiki/index.php/Examples

abolfazlabedi
Posts: 3
Joined: Sun Nov 06, 2011 6:25 am
Location: Shahid Bahonar University Of Kerman
Contact:

Errors in 3D truss modelling or analysis

Hi to all.
My goal is doing an IDA analysis on Domes (spatial/space one), but in modelling I faced errors in doing a simple linear static analysis.
Errors like these:
"WARNING BandGenLinLapackSolver::solve<> -LAPACK routine returned 8
WARNING NewtonRaphson::solveCurrentStep<> -the LinearSysOfEqn failed in solve <>
StaticAnalysis::analyze<> - the Algorithm failed at iteration: 0 with domain at load factor 0.1
OpenSees > analyze failed, returned: -3 error flag
done with analysis"

I made a simple 3D truss for solving this error more easily.
Can you check this model in OpenSees and solve its problem?
I know this is a big requeat from me but it's very important.
Thank you so much.
# Units: kg, m, sec
model BasicBuilder -ndm 3 -ndf 6
node 1 0 0 1
node 2 0 1 0
node 3 1 0 0
node 4 1 1 0
node 5 0 0 0
fix 2 1 1 1 0 0 0
fix 3 1 1 1 0 0 0
fix 4 1 1 1 0 0 0
fix 5 1 1 1 0 0 0
pattern Plain 1 "Linear" {
load 1 0.0 0.0 -1 0.0 0.0 0.0
}
puts "ok1"
mass 1 0.5 0.5 0.5 0.000000001 0.000000001 0.000000001
uniaxialMaterial Steel02 1 24e6 2.1e10 0.01 10 0.925 0.15 0.005 0.01 0.005 0.01
element truss 1 1 2 0.001 1
element truss 2 1 3 0.001 1
element truss 3 1 4 0.001 1
element truss 4 1 5 0.001 1
constraints Transformation
numberer RCM
system BandGeneral
test NormDispIncr 1.0e-6 30
algorithm Newton
analysis Static
recorder Node -file nodeDisp.out -load -node 1 -dof 1 2 disp
analyze 1
print node 1

fmk