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The ground motion is applied in this way to account for an underlying elastic halfspace following the method of Joyner and Chen (1975), which I think is referenced in the wiki article for that example. All of the nodes still have mass, and hence inertia forces, just as would be the case in a fixed-b...

I don't see anything glaringly wrong with how you've created your nDMaterial objects. I suspect that the problem lies with how the FluidSolidPorous wrapper material is interacting with the BoundingCamClay. I've never tried using them in combination together, have only ever done total stress analysis...

Check out Chapter 4 of this report (link below) for some information on how the OpenSees implementation of the Drucker-Prager model behaves under certain loading conditions. Specifically, the results shown here demonstrate how various values of the tension softening parameter change the model respon...

The figure in question is Figure 3.24 on page 86 of the listed reference: Reese, L.C. and Van Impe, W.F. (2001), Single Piles and Pile Groups Under Lateral Loading. A.A. Balkema, Rotterdam, Netherlands. which shows how the static and cyclic A coefficients vary with depth to diameter ratio (z/B). The...

The ManzariDafalias model does not currently work. It's still under development, but isn't really a priority at the moment. I think that the CycLiqCP model is included in 2.4.0 (not 100% sure though), so you may be able to use that model as an alternative to the PressureDependentMultiYield models if...

The Template3Dep nDMaterial was removed from the source code in svn rev 4668. According to the release notes, version 2.3.2 was made at svn rev 4665. If that information is correct, that version of the executable should work (I'm not sure if that is still the latest version). If that version doesn't...

OK, I see. Have you tried running these with a sine curve instead of the Gilroy motion? The simplicity of the solution for that case might help you pinpoint why the two analyses aren't matching up. It also could be helpful to compare both sets of results to something that you know is correct, e.g., ...

Are you comparing your analysis to example 7.1 from Kramer's text? If so, the profile you are specifying in the input file is not the same, and that is most likely why you can't get your results to match up. Check your profile thickness, 10 ft does not equal 40 m. The shear wave velocity and mass de...

That error means that the InitialStateAnalysisWrapper nDMaterial object doesn't exist in your build of OpenSees. It was added to the svn project in revision 4452, so if your local version is at revision 4457, then I'm guessing that your compiler didn't know to include it. I'm working in a Linux envi...

I'm not very familiar with the zeroLength contact elements, but from a quick glance at the source code, it looks like there are some additional input terms that you need to specify for the zeroLength3D element vs. what is documented for the 2D version. You could probably figure out what these terms ...

I created an example a while back that showed how to use GiD to set up an analysis of a 2D slope. I incorporated a Lysmer-Kuhlemeyer dashpot boundary condition there. In that example, I provided the problemType (.bas file) that I used, and I explain how to apply the various conditions in GiD. This s...

Using the advice that was posted here and some of my own experience cracking these little OpenSees problems that seem arise, I think that I have figured this one out. The syntax given in the manual at cyclic.ucsd.edu/opensees/OSManual_UCSD_soil_models_2008.pdf seems to be the way to go. Example usag...