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hi all Followin warnings were encountered when running modal analysis of a -ndm 2 -ndf 3 structure. WARNING DOF_Group::setID - invalid location 3 in ID of size 3 WARNING DOF_Group::setID - invalid location 4 in ID of size 3 WARNING DOF_Group::setID - invalid location 5 in ID of size 3 WARNING DOF_Gr...

Thank you. I try the following method these days. But it failed at first iteration. Could you give me some suggestions? wipe puts "System" model basic -ndm 2 -ndf 3 puts "node" node 1 -1.650E+004 0.000E+000 node 2 -1.650E+004 3.800E+003 node 5 -7.500E+003 3.800E+003 node 212 -7.5...

Thank you very much.
The soft horizontal link method was suggested by a master thesis. So I think it is reasonable and try to use it. I don't know if there are some problems in my model.

I would like to do modal pushover of a tall building and need to obtaine the descending part of pushover curves for collapse analysis. For higher modes lateral loads (such as the 2nd modes), it is difficult to obtaine the descending part by applying loads on nodes of the building. So I try to use th...

Dear all I would like to do a pushover analysis of a single story frame. There is a horizontal truss element connect with the beam of the frame. The lateral load is applied on the truss element by sp command. The analysis failed to converge. It seems like the constraint of the loading point had some...

ok, thank you

Thank you very much Jhno.
Do you know how to set the P-Delta for Two Node Link Element or is there any document such as user's manual to introduce it. I do not understand clealy the instruction on the website “http://opensees.berkeley.edu/wiki/index ... nk_Element”.

What is the difference between 'localDisplacement' and 'basicDisplacement'? Does the former one mean the relative displacement between the two nodes of the link element?

Dear, Jhno
Thank you very much.

Dear, Jhno Thank you for your inspiring answer. I replaced uniaxialMaterial MultiLinear with uniaxialMaterial Steel01 and it worked. But I can only obtaine the first three natural periods of the structure. Actually it should have 4 periods. code: wipe all model BasicBuilder -ndm 2 -ndf 3 node 1 0. 0...

hi~ I encounter the following problem during eigen analysis ArpackSolver::Error with _saupd info = -3 NCV must be greater than NEV and less than or equal to N. WARNING DirectIntegrationAnalysis::eigen() - EigenSOE failed in solve() code wipe all; model BasicBuilder -ndm 2 -ndf 3 node 1 0. 0. node 2 ...

fmk wrote: > you need to update thanks fmk i update the software and the problem is solved. but another problem comes. OpenSees > source dispControl.tcl WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 2 WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve() ...

fmk wrote:
> tell me the version and revision number that spits out when you star the
> exe
2.4.4<rev 5774>

fmk wrote: > are you using the latest version of the code as the following example the > authors provided works fine: > uniaxialMaterial SteelMPF 1 60 60 29000 0.02 0.02 20.0 18.5 0.15 thanks fmk The Input Format of code is in in accordance with the example, like # STEEL ...............................

Hi all,

When i run the code of an example (http://opensees.berkeley.edu/wiki/index ... r_RC_Walls), encounter the warning 'could not create uniaxialMaterial SteelMPF'. How could i solve the problem?

thanks