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Thank you for the quick reply, Hilber-Hughes-Taylor did the trick!

Hi,

I am trying to perform a dynamic analysis using the new contact element in STKO. My model performs great for static loading, but not so great for dynamic loading. The solution converges, but the results are either way off or very noisy. It seems to work best with Krylow-Newton as the solver and ...

Ok, I will read the paper. Thank you again for great support!

Of course, thank you! I have watched webinar #24 and have been playing around with the element. Very impressive! The model also works better with the displacement-based beam.

Both the displacement/force- based beams and the new contact element are somewhat new to me. I can find a lot of literature ...

Hi,

I have some problems running a pile - soil model. The model closely follows the model from the 22nd webinar on SSI. The initial state analysis works seemingly fine, but a error message concerning the inversion of the flexibility matrix occurs during the subsequent analysis. I cannot see any ...

Due to the nature of my problem, and the fact that this is an academic task, I think the best solution in my case is to run a few parametric analysis to highlight potential differences and then neglect the added damping since, as you say, it is very difficult to predict correctly.

Again, thank you ...

First, thank you for the detailed and quick reply!

Initially, I was thinking exactly what you write. Since I am using the PIMY-model in a 3D-domain, the main damping effects, i.e. hysteric damping and radiation damping are accounted for.

At initial high stiffness (small loads) the damping is ...

Hi Bence, I am glad to see that you are doing great with your model!

Assuming that you are using some kind of non-linear model for the soil, are you adding any additional material damping?

I have a model that seemingly works fine, but I am not sure if I am adding sufficient or to much damping ...

Ok, thank you!

There is another, more performant way to do it, without the MPCO recorder. During your analysis, you can write text files with only the desired results. 1 file for each node/element. You can do it either using the Monitor (it will write .plt files, which are actually text files) or ...

Thank you for the reply. You are right, there is not an actual error. The code that I attached in the previous post opens all the mpco databases and creates the desired files. I made on simple adjustment - I changed the name so that only the "0.mpco"-files are opened.


0mpco.JPG


However, once ...