Search found 5866 matches

by fmk
Tue Nov 02, 2004 10:40 am
Forum: OpenSees.exe Users
Topic: The command beamWithHinges is work well?????
Replies: 1
Views: 1689

the command in the manual should be correct.
by fmk
Mon Nov 01, 2004 9:58 am
Forum: OpenSees.exe Users
Topic: About plain Pattern - eleLoad commond ??
Replies: 5
Views: 4073

the eleLoad command goes inside the plain pattern command in the same way nodal loads do .. just look at Example3.1 or 3.2.
by fmk
Fri Oct 29, 2004 10:02 am
Forum: OpenSees.exe Users
Topic: To fmk
Replies: 1
Views: 2937

the problem is that the default eigen solver uses the arpack routines to determine the eigenvalues and eigenvectors .. this is a very efficient package for finding a few eigenvalues of big systems .. it will not find all eigenvalues however, the most is n-1 .. for very small systems a new feature in...
by fmk
Thu Oct 28, 2004 3:18 pm
Forum: Framework
Topic: Question on Vector computation
Replies: 4
Views: 2708

the first involves 5 calls to the matrix constructor & 5 subsequent calls to the destructor .. lots of memory calls to the os typically kill object-oriented programs (it's why we use references wherever we can). the second involves all those calls to the inline functions .. while not great .. probab...
by fmk
Wed Oct 27, 2004 9:52 am
Forum: OpenSees.exe Users
Topic: some <QUE.>
Replies: 4
Views: 4352

you probably have a concrete model .. it depends on the model, concrete values and state of strain in Concrete fibers (remember there is a big jump between tangent returned by concrete material if under tension (0.0) or initial compression (Ec) .. initially if fibers at very low strain any small mov...
by fmk
Wed Oct 27, 2004 9:23 am
Forum: OpenSees.exe Users
Topic: The coordinate system
Replies: 1
Views: 4443

we will try to make the documentation clearer .. in the meantime you can quite easily figure this out for youself .. model a cantilever with a single nonlinearBeamColumn element, create a rectangular section with elastic materials and apply the same load in the 2 orthogonal directions (y,z if member...
by fmk
Mon Oct 25, 2004 10:45 am
Forum: OpenSees.exe Users
Topic: help required....
Replies: 1
Views: 2977

i am not sure where you got your Example3.1.tcl from .. look in the actual file you have for the recorder command(s) .. the name of the output file(s) will be there .. look for those files .. for example, the current Example3.1.tcl contained with a source distribution and found at http://opensees.be...
by fmk
Mon Oct 25, 2004 10:38 am
Forum: OpenSees.exe Users
Topic: employed time
Replies: 3
Views: 2281

tcl hs 2 built in commands for this: time & clock

set duration [time "source Example3.1.tcl"]; #duration a string containg time in milliseconds

or

set t1 [clock seconds]
source Example3.1.tcl
set t2 [clock seconds]
set duration [expr $t2 - $t1]; # duration in seconds
by fmk
Thu Oct 21, 2004 10:27 am
Forum: OpenSees.exe Users
Topic: -nees in the element recorder
Replies: 5
Views: 3890

currently the source is avail via cvs only. i will try and get the tarballs up shortly.
by fmk
Wed Oct 20, 2004 11:07 am
Forum: OpenSees.exe Users
Topic: employed time
Replies: 3
Views: 2281

the pseudoTime is the time in a dynamic analysis .. we just call it pseudoTime because people get confused when we mention time in a static analysis.

or are you referring to something else when you say 'time'?
by fmk
Tue Oct 19, 2004 1:02 pm
Forum: OpenSees.exe Users
Topic: Global stiffness and mass matrix, plus Caughey damping!
Replies: 2
Views: 5625

1. not so easy due to the fact that the tangent matrix can be stored in different formats, i.e. banded, symmetric banded, profile, sparse, symm sparse, etc .. and there is no Print method currently in these classes .. also these classes would be useless to you for caughey damping as outlined in 2. 2...
by fmk
Tue Oct 19, 2004 12:45 pm
Forum: OpenSees.exe Users
Topic: -nees in the element recorder
Replies: 5
Views: 3890

version 1.6.1 now posted at the website has the -nees option. for some reason somebody took had taken it out from a file i had given him and i didn't check to make sure he did not modify any of my code while he was at it . can't trust anyone!
:oops:
by fmk
Tue Oct 19, 2004 11:00 am
Forum: OpenSees.exe Users
Topic: Can I control the displacement with (0->+3->-5->+7-
Replies: 3
Views: 2218

the answer is given above .. suggest you do a single dof problem, do the analysis given above and then look at what happens to the nodal displacements.
by fmk
Mon Oct 18, 2004 5:14 pm
Forum: OpenSees.exe Users
Topic: element load syntax ?
Replies: 1
Views: 1343

there was a post to a question further down the board for 2d beams .. suggest you
put a post in the documentation part of the message board on the element you are interested in .. this way i can get the person responsible for the doc to go bug Michael
about it!
by fmk
Mon Oct 18, 2004 5:08 pm
Forum: OpenSees.exe Users
Topic: some <QUE.>
Replies: 4
Views: 4352

1. OpenSees is unitless. We will not go through the file & pick the max for you. you can do this using a tcl script if you wish (go look at a tcl book for example). the values assigned are the data values in the file * the factor you specify. it's up to you to figure out the factor. 2. use command '...