Search found 23 matches
- Thu Jul 23, 2015 3:35 pm
- Forum: OpenSees.exe Users
- Topic: Update material during analysis
- Replies: 0
- Views: 5748
Update material during analysis
I am interested in applying the confinement of concrete according to CEB Model Code 1990 §3,5,2,1. According to the corresponding figure (Fig 3,5,4), concrete in tension contributes to the confining pressure in addition to confinement provided by the hoops. Consequently, the confining pressure is di...
- Tue Jan 06, 2015 3:32 pm
- Forum: OpenSees.exe Users
- Topic: node tag of specific coordinate
- Replies: 3
- Views: 3200
Re: node tag of specific coordinate
http://opensees.berkeley.edu/wiki/index.php/GetNodeTags
I found this command in the command manual but there's no desciption. Does this mean that the command isn't available or has been removed?
I found this command in the command manual but there's no desciption. Does this mean that the command isn't available or has been removed?
- Fri Aug 29, 2014 10:11 am
- Forum: OpenSees.exe Users
- Topic: torsional stiffness
- Replies: 4
- Views: 5098
Re: torsional stiffness
On account of this topic, I would like to ask the reason for customarily assigning large values of torsional stiffness when modelling 3D buildings (like the example you posted above), instead of the actual stiffness calculated using the equations of engineering mechanics.
- Fri Jan 17, 2014 9:42 am
- Forum: Feature Requests/Future Directions
- Topic: New commands
- Replies: 3
- Views: 14330
Re: New commands
Instead of automatic e-mails to users, you could create a change log page, similar to the log page of the software: http://opensees.berkeley.edu/OpenSees/changeLog.php I think this would be easier to create and more informative, since all changed will be listed together.
- Tue Dec 17, 2013 10:58 am
- Forum: OpenSees.exe Users
- Topic: Running OpenSees files from Notepad++
- Replies: 10
- Views: 11888
Re: Running OpenSees files from Notepad++
Sorry, I found the answer elsewhere and forgot to update the topic. Add the command "pause" in a new line in the end:
echo off
cls
echo Starting OpenSees..
echo off
location_of_OpenSEES\openSees.exe location_of_your_model\yourModel.tcl
pause
echo off
cls
echo Starting OpenSees..
echo off
location_of_OpenSEES\openSees.exe location_of_your_model\yourModel.tcl
pause
- Tue Dec 10, 2013 10:06 am
- Forum: OpenSees.exe Users
- Topic: Rigid beams in fiber modeling of RC shear wall (urgent)
- Replies: 3
- Views: 3382
Re: Rigid beams in fiber modeling of RC shear wall (urgent)
An element is effectively rigid, if the results from analyses with different E (eg. 1000E & 10000E) do not vary significantly. Usually, E=1000*Ec would be enough.
- Sat Nov 23, 2013 9:23 am
- Forum: OpenSees.exe Users
- Topic: ElasticTimoshenkoBeam
- Replies: 2
- Views: 3134
Re: ElasticTimoshenkoBeam
Out of curiosity, is the element documented? I can't find it in the element list in the command manual: http://opensees.berkeley.edu/wiki/index ... nt_Command
- Mon Sep 16, 2013 4:20 am
- Forum: OpenSees.exe Users
- Topic: List of nodes assigned to rigid Diaphragm
- Replies: 5
- Views: 5480
Re: List of nodes assigned to rigid Diaphragm
By the sound of it, the slaveNodeTag argument accepts only variables and cannot discriminate the elements of a given list. The only solution that I can think of right now is to greadually construct the diaphragm, using multiple rigidDiaphragm commands. Put the command within a loop and use the linde...
- Sun Sep 15, 2013 3:34 pm
- Forum: OpenSees.exe Users
- Topic: List of nodes assigned to rigid Diaphragm
- Replies: 5
- Views: 5480
Re: List of nodes assigned to rigid Diaphragm
I am not familiar with the rigidDiaphragm command, but this looks like a tcl-scripting error. If I understand correctly, the programme tries to implement a command defined by string "0 1 2 ....". Since there's no such command, an error is encountered. You can either try to remove the brack...
- Wed Jul 17, 2013 11:31 am
- Forum: OpenSees.exe Users
- Topic: existing story forces
- Replies: 3
- Views: 3242
Re: existing story forces
I think that you mean the total shear force of every column of a storey. I'm not sure if such a recorder is available, but you can you can calculate yourself the total shear force at the post-processing phase (eg. using matlab).
- Thu Jul 11, 2013 6:57 am
- Forum: OpenSees.exe Users
- Topic: Why different result from nonlinearBeamColumn and dsipBeamCo
- Replies: 1
- Views: 2150
Re: Why different result from nonlinearBeamColumn and dsipBe
I suggest that you should study the following presentation concerining the differences between these two elements. http://opensees.berkeley.edu/wiki/index.php/Discovering_OpenSees_--_Force-based_Element_vs._Displacement-based_Element In general, displacement-based elements require a more detailed me...
- Thu Jul 04, 2013 9:58 am
- Forum: OpenSees.exe Users
- Topic: Have to use fiber elements to get P-Delta for pushover?
- Replies: 1
- Views: 2227
Re: Have to use fiber elements to get P-Delta for pushover?
Above all, you 'll have to change the geometric Transformation to PDelta http://opensees.berkeley.edu/wiki/index ... sformation (I'm guessing you're using Linear).
- Fri Jun 28, 2013 8:51 am
- Forum: OpenSees.exe Users
- Topic: reading a .txt file in a list format
- Replies: 2
- Views: 2783
Re: reading a .txt file in a list format
the gets command reads only a line of data every time http://www.tcl.tk/man/tcl8.5/TclCmd/gets.htm
try the read command, or use a loop to read every line
try the read command, or use a loop to read every line
- Thu Jun 27, 2013 2:05 pm
- Forum: OpenSees.exe Users
- Topic: Rayleigh Damping
- Replies: 3
- Views: 3210
Re: Rayleigh Damping
In order to assign damping values to 3 or more vibration modes, you have to use Caughey damping, but I do not know if such an option is available in opensees.
- Thu Jun 13, 2013 1:12 pm
- Forum: OpenSees.exe Users
- Topic: confinedconcrete01
- Replies: 1
- Views: 2583
Re: confinedconcrete01
Have you specified a unique material tag?