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This is my OpenSees code. wipe; wipeAnalysis; file mkdir Data; model BasicBuilder -ndm 2 -ndf 3; node 1 0.0 0.0; node 2 0.0 0.0; equalDOF 1 2 1 2; fix 1 1 1 1; set eleID 1 ; set K 26.43e6 ; set as 0.035 ; set My 3.46e5 ; set LS 3.6 ; set LD 3.6; set LA 3.6 ; set LK 3.6 ; set c 1. ; set th_p 0.06 ; s...

I used zero length element to model abutment. Since the deck in my model is not straight, I have to rotate the direction of zerolength element relative to deck axis to be able to consider local coordinate of abutment. But the results are the same with original direction (original direction means zer...

ismailqeshta wrote: > You need to use "list" command for each one (steel strength and > concrete strength). > set m1 [list 1 2 3] > set m2 [list 4 5 6] > > Then, run the "for" loop: > for {set i 0} {$i < 3} {incr i} { > I used here 3 as the number of variables. You can change it....

Thank you selimgunay. That works. Also I used foreach. It works too. So we can say there are at least two ways to consider uncertainty:
1- By "list" command
2- By "foreach" command

ismailqeshta wrote: > You probably need to use "for" loop. If you are using Matlab, you > may come up with your initial code and refine it through some help from > Matlab forums. Thanks for reply. Actually I need to change steel (rebar) and concrete strength properties in each analysis. Ho...

Hi All.
Is there someone to guide me how I can run different models with random values for material properties and other attributes using matlab? Can it be done by opensees?

fmk wrote: > BACK TO MY POST and your response .. > > the second column was not the displacements at node 1 and the third the > displacements at node 2 .. each column is the difference between the > displacements at node 2 and those at node 1 for a particular dof .. you > have defined the zerolength...

Can someone help me?
I really need to help.

selimgunay wrote: > Theoretically you should get the same results from the two options, > otherwise it may indicate a problem in the model. It looks like your > deformations in the first 0.3 sec are quite small, is it like that for the > rest? That may explain the same displacements of nodes 2 and 3...

Thank you. I did it before but there is a problem with that. Actually the first, I defined 3 nodes with same coordinate (node 1 , 2 and 3) and defined two zerolength elements: first one is for abutment and between nodes 1 and 2; second one for shear key and Impact element between nodes 2 and 3. Node...

fmk wrote: > it is the element deformations in each of the 2 dof direcions: e.g. > Node2.Disp(dof) - Node1.Disp(dof), Node2.Disp being vector of displacements > at node 2. Thank you. You mean the second column presents displacement in node1 and third column shows displacement in node2? If so what di...

Is there anyone to help me?

I have modeled a bridge. For modeling of abutment, I employed a zerolength element. I used the following recorder to find what the outputs present: recorder Element -xml $dataDir/abutmentele18.out -time -ele 18 deformation When I check the output file, the following phrase can be seen: <?xml version...

Final question. The base of columns in my model is fixed. So we expect the curvature in that region is equal zero. But when I recorded curvature in the element including support node (fixed base node) the value of max curvature is about 0.04 1/m while it should be zero. Actually the used element is ...

selimgunay wrote:
> It is around the local y axis of the section
Thank you so much.