The OpenSees Community

Hi all, I used to be able to successfully use Opensees within Matlab (Windows XP and Matlab 2007b) with the command: ! opensees FILE.tcl I have just installed Windows 7 64bit and I use Matlab 7.10 R2010a 64bit and the command no longer works. Has the command changed? Any suggestions would be great. ...

Hi all, I used to be able to successfully use Opensees within Matlab (Windows XP and Matlab 2007b) with the command: ! opensees FILE.tcl I have just installed Windows 7 64bit and I use Matlab 7.10 R2010a 64bit and the command no longer works. Has the command changed? Any suggestions would be great. ...

Hi all, I used to be able to successfully use Opensees within Matlab (Windows XP and Matlab 2007b) with the command: ! opensees FILE.tcl I have just installed Windows 7 64bit and I use Matlab 7.10 R2010a 64bit and the command no longer works. Has the command changed? Any suggestions would be great. ...

Hi all, I used to be able to successfully use Opensees within Matlab (Windows XP and Matlab 2007b) with the command: ! opensees FILENAME.tcl I have just installed Windows 7 64bit and I use Matlab 7.10 R2010a 64bit and the command no longer works. Has the command changed? Any suggestions would be gre...

Hello, I am using a couple materials in Parallel to simulate strength degradation in a reduced beam section. For the most part, it looks good, however, I would finally like to add one more property: a minimum force where the strength would never degrade below that level. I have tried a couple differ...

Hi, I would like to run OpenSEES through Matlab using me Teragrid allocation. I currently run the Windows version of OpenSEES and Matlab on my laptop using the Matlab command ! opensees Analysis.tcl Would that command still work on the Teragrid computers considering that their OpenSEES version is on...

Hi Silvia, I am inputting a velocity time history and receiving the following warning message: WARNING: GroundMotion::getDisp(double time) - integration is required to get the ground displacements from the ground velocities I am using the default trpezoidal approximation to integrate the velocity so...

Hi

Sorry to ask again, but do you have an estimate of when the new version will be released?

Thank you!

thats great! i'm guessing that the next release will be in a month or so?

Hello, just out of curiosity, is there a command similar to nodeDisp and eleForce that will give me the deformation in an element?

Thank you!

Thank you for your help!

Is there a way to change it such that the reloading stiffness is equal to its elastic stiffness?

Hello, My hysteretic material behaves fine when I subject it to a static load. Its tension and compression trilinear parameters match what I entered when defining the material, of course. However, when I subject it to a cyclic load (ie EQ) it acts unusual. Every time it crosses the force = 0 axis, i...

Hello, I am running into a problem with my model. I cannot seem to record the force and deformation in the spring! The first column in the recorder output is just the forces calculated by Opensees for the DisplacementControl. The second column (whether it be forces or def) is just zeros. Here is wha...

Thank you once again

I'm trying to capture the cyclic response of a beam with reduced cross section. At each plastic excursion during the cyclic load, the beam's strength is reduced.

Thanks!

Hello, I realized that the Steel01 and Steel02 materials model strength degradation quite nicely (i just made negative isotropic hardening parameters) but i have a question about its application. I have a zeroLength element that is a rotational spring. I would like to apply the Steel02 material (the...