Search found 17 matches

by mohsenVazirizade
Tue Jun 21, 2016 8:57 am
Forum: OpenSees.exe Users
Topic: section Elastic ... $G $alphaY
Replies: 3
Views: 4242

Re: section Elastic ... $G $alphaY

I got it, they are the ratio between the area of the element for shear (y and z in local direction, respectively) to area of the element for axial loading
by mohsenVazirizade
Thu Jun 16, 2016 6:32 am
Forum: OpenSees.exe Users
Topic: equalDOF/rigidLink beam or bar
Replies: 2
Views: 3853

Re: equalDOF/rigidLink beam or bar

I don't think the following description about the rigid link command is correct. is there any idea?


http://opensees.berkeley.edu/wiki/index ... nk_command
beam both the translational and rotational degrees of freedom are constrained.
by mohsenVazirizade
Wed Jun 08, 2016 4:00 am
Forum: OpenSees.exe Users
Topic: section Elastic ... $G $alphaY
Replies: 3
Views: 4242

Re: section Elastic ... $G $alphaY

would you please explain more about these parameters and its application?
by mohsenVazirizade
Mon May 23, 2016 11:20 pm
Forum: OpenSees.exe Users
Topic: Interpolated GroundMotion causes crash
Replies: 8
Views: 7551

Re: Interpolated GroundMotion causes crash

Should the response of UniformExcitation and MultipleSupport be the same? I understand that UniformExcitation uses Trapezoidal as the only option and MultipleSupport as the default option. I expected their results to be the same. Therefore, I provided an example. According to the acceleration values...
by mohsenVazirizade
Sat May 14, 2016 7:22 pm
Forum: OpenSees.exe Users
Topic: pattern UniformExcitation 1 1 -disp
Replies: 4
Views: 4141

Re: pattern UniformExcitation 1 1 -disp

Let me ask you my question in other way. I understand that UniformExcitation uses Trapezoidal as the only option and MultipleSupport as the default option. I expected their results to be the same. Therefore, I provided an example. According to the acceleration values and Trapezoidal method I expecte...
by mohsenVazirizade
Sat May 14, 2016 3:15 am
Forum: OpenSees.exe Users
Topic: section Elastic ... $G $alphaY
Replies: 3
Views: 4242

section Elastic ... $G $alphaY

What are the parameters alphaY and alphaZ in the following command?? section Elastic $secTag $E $A $Iz <$G $alphaY> section Elastic $secTag $E $A $Iz $Iy $G $J <$alphaY $alphaZ> http://opensees.berkeley.edu/wiki/index.php/Elastic_Section In the manual it is just stated that they are shape factor. Wo...
by mohsenVazirizade
Fri May 13, 2016 8:39 am
Forum: OpenSees.exe Users
Topic: pattern UniformExcitation 1 1 -disp
Replies: 4
Views: 4141

Re: pattern UniformExcitation 1 1 -disp

Thanks for your consideration.
In this regard, the only option for UniformExcitation and default option for MultipleSupport is Trapezoidal. With this in mind, why the final results, as mentioned earlier (3.35 and 3.33), are not the same?
by mohsenVazirizade
Fri May 13, 2016 7:33 am
Forum: OpenSees.exe Users
Topic: Interpolated GroundMotion causes crash
Replies: 8
Views: 7551

Re: Interpolated GroundMotion causes crash

Thanks, thats right.
actually, when I use disp rather than accel it works. However, if I use accel, I encounter a warning which states that integration is required. I thought it assumed something (Trapezoidal) as default. Would you please let me know what should we add to the mentioned commands?
by mohsenVazirizade
Fri May 13, 2016 6:58 am
Forum: OpenSees.exe Users
Topic: pattern UniformExcitation 1 1 -disp
Replies: 4
Views: 4141

pattern UniformExcitation 1 1 -disp

I am trying to use UniformExcitation command and use displacement record rather than acceleration record. There are two ways for implementing that: 1 timeSeries Path 1 -dt .1 -filePath record/recdis.txt -factor 1 pattern UniformExcitation 1 1 -disp 1 2 set Disp "Series Path 1 -dt .1 -filePath r...
by mohsenVazirizade
Thu May 12, 2016 9:40 am
Forum: OpenSees.exe Users
Topic: Is arragement of nodes in RigidLink or equalDOF important?
Replies: 2
Views: 3490

Re: Is arragement of nodes in RigidLink or equalDOF importan

Thanks for your response. In order to sum up for others: The earlier example is analyzed by constraints Transformation. In other words, if one uses constraints Transformation should not define the node A in a command as the master node and in another comment as the slave node. However, we do not enc...
by mohsenVazirizade
Wed May 11, 2016 12:12 pm
Forum: OpenSees.exe Users
Topic: equalDOF/rigidLink beam or bar
Replies: 2
Views: 3853

equalDOF/rigidLink beam or bar

As we can see in the Manual, there are three commands for Multi-Point Constraints. 1 rigidDiaphragm 2 equalDOF 3 rigidLink 3-1 rigidLink bar 3-2 rigidLink beam In this topic I want to shed light on the difference between the second and third ones: if you see this topic: http://opensees.berkeley.edu/...
by mohsenVazirizade
Wed May 11, 2016 8:27 am
Forum: OpenSees.exe Users
Topic: Is arragement of nodes in RigidLink or equalDOF important?
Replies: 2
Views: 3490

Is arragement of nodes in RigidLink or equalDOF important?

I modeled 4 cantilever columns. Then, push them with a force in node 5. node 1 0. 0. 0. node 2 4. 0. 0. node 3 0. 4. 0. node 4 4. 4. 0. node 5 0. 0. 5. node 6 4. 0. 5. node 7 0. 4. 5. node 8 4. 4. 5. fix 1 1 1 1 1 1 1 fix 2 1 1 1 1 1 1 fix 3 1 1 1 1 1 1 fix 4 1 1 1 1 1 1 pattern Plain 1 Linear { loa...
by mohsenVazirizade
Wed May 11, 2016 6:15 am
Forum: Useful Scripts.
Topic: tcl procedure for creating a W or I steel fiber section
Replies: 0
Views: 12777

tcl procedure for creating a W or I steel fiber section

proc Isection { secID matID d bf tw tf Nfx Nfy Nwx Nwy} { # ################################################################### # Isection $secID $matID $d $bf $tf $tw $nfdw $nftw $nfbf $nftf # _________________________________________________________________ # # Because the shape may be distorted h...
by mohsenVazirizade
Mon May 02, 2016 12:34 pm
Forum: OpenSees.exe Users
Topic: what does this mean for the eigenvalue analysis?
Replies: 6
Views: 5604

Re: what does this mean for the eigenvalue analysis?

Would your please let me know why I encounter the followoing error when I run this commands? set a {1 2} recorder Node -file $direction/Reigenvector-Mode$ModeNumber-Node$NodeNumber-x.out -precision 10 -node 1 -dof $a "eigen 1 " NodeRecorder::NodeRecorder - dataToStore 1 2not recognized (di...
by mohsenVazirizade
Mon May 02, 2016 3:12 am
Forum: OpenSees.exe Users
Topic: Error in absolute acceleration record
Replies: 6
Views: 7630

Re: Error in absolute acceleration record

I think the problem will be solved if you try the following command:

set accelSeries "Series -dt $dt -filePath $GMfile -factor [expr $Scalefact*$g]";

Actually timeSeries is replaced by Series.