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# t should be y1, y2 and z1,z2 should be d when changing the orientation because it will change #orientation in y-axis and z-axis set y1 [expr -$d/2]; set y2 [expr $d/2] set z1 [expr -$t/2] set z2 [expr $t/2] section fiberSec $secTagGPb { # nfIJ nfJK yI zI yJ zJ yK zK yL zL patch quadr $matID_GP $nf...

Can I use the rotation about Zaxis(along height) formula to rotate the cross-section of column. set nosRo 5; # total number of rotation done for section #for { set i 0 } { $i < $nosRo } { incr i } { set Theta [expr 360./$nosRo*2.0] set pi [expr 2*asin(1.0)]; set c [expr cos($pi/180.*$Theta)] set s [...

is the unit of 'g' in m/sec2 or might be mistaken in conversion from US unit to MKS unit.

I was trying to do the analysis of column by rotating the section but I got stuck in transformation. Section is in XY plane and height in Z-direction set nosRo 5; # total number of rotation done for section set transfTag 1 set pi 3.1444 for { set i 0 } { $i < $nosRo } { incr i } { set Theta [expr 36...

Looks like you have reference solution. Check the unit. what about the unit of input of motion file

says $ColSecTag should be integer. I think you havent set ColSecTag

No, I havent done yet.

Can someone suggest me plane stress material for concrete.I need to use in 3D for shell element

I tried PlasticDamageConcretePlaneStress and PlaneStressUserMaterial but the load-deflection curve goes on increasing.
Also tried to use Damage2p but no convergence at all.

Thanks
Since your unit of Force is kN, and displacement is mm, your deformation will be in mm

Looks like problem has been solved by updating my opensees to version 3.0.0a
I tired to use concrete nDMaterial Damage2p as plate fibre and then form a section layered for shell element
but looks like there is problem using Damage2p as Platefibre
nDMaterial Damage2p 1 $fc
nDMaterial PlateFiber 2 1

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I have used section layered material in 2Dm analysis with quad element. recently, I need to model in 3D using Shell element. So, needed to use PlateFromPlaneStress. But, when I use it , I find it calculation time is too long. I tried to test the already work out model from http://www.luxinzheng.net/...

Do, we have a elastic material which can resist only tension. Actually, I needed this material for truss element which only resists tension and is elastic. I googled but could not find, just found elastic with no tension material