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thanks for replay dear vesna
i have an question
how can i consider shear properties of wall if i use fiber sections?

hi dear vesna
i am modeling shear wall using shell element
for section define i am using fiber section
i should consider the 0,0 of section in the center or in the i point of shell element

hi dear vesna i for determination of local axis act as follow : The x-axis is the axis connecting the two element nodes then i consider y axis optional then using the right hand rule i determine z axis then the vecxz is the vector that its direction is the opposite direction of z axis is that true p...

hi dear vesna
i want to define zerolength element . how can i determine the orient of element.
we have stifness in 1 , 2 ,3 directions
thanx

hi dear vesna
i need to model a concrete bridge in opensees
if you have an example about that please send me
thanks
best regards

hi dear vesna
is any way to define of pined connection without using equaldof command ?
and in truss element connections are pined or rigid ?
tanks

hi dear vesna
i want to define steel02 material
the unit of Fy and E should be kg/cm^2 or N/cm^2
my gravity loads are at unit of kg and eleloads are at unit of N (newton)
tanks

hi dear vesna
tanks for replay
if we use from integrator LoadControl $incrSpost 1 $incrSpost $incrSpost
in the loop value of landa is always $incrSpost or will be increase in each step
regards

hi dear vesna my load pattern is as follow: pattern Plain $y Linear { load 12 $p1 0 0 load 22 $p1 0 0 load 32 $p1 0 0 load 42 $p1 0 0 load 52 $p1 0 0 load 62 $p1 0 0 } that p1 ,....,p6 are loads that in each step increases if we use the integrator LoadControl $incrSpost 1 $incrSpost $incrSpost in th...

hi dear
what is difference between this two command ?
set fee1{1} 1
set fee1 1
tanks

hi dear vesna
tanks a lot i find out my problem
set ok [analyze $nstep]
tanks

hi
tanks a lot for replay
my problem is that if we do not use from ANALYZE command in pushover analysis how many step will done for this analyse
tanks

hi dear vena in pushover analysis how we determine the number of steps ? for example set LBuilding 24.5; set IDctrlNode 73; set IDctrlDOF 1; set Dmax [expr 0.02*$LBuilding ]; # maximum displacement of pushover. push to 10% drift. set Dincr [expr 0.0001*$LBuilding ]; # displacement increment. you wan...

hello dear i write this program and have problem with solution and analyse and has very large periods please help me to solve this problem thanks alot # OpenSees beyrami and sadat # OpenSees Primer # # Units: kg, m, sec # ------------------------------ # Start of model generation # -----------------...