asdeasoft.net

Dear STKO Team

This is one of a group of non free field trials. Due to the impact of the COVID-19 epidemic, I can't provide many information now. Later, if you need it, I will provide it

Best wishes

Is there some "interface" material between the box and the soil?

Dear STKO team,
sorry. I just got back to you now. I've solved this problem. Thank you for your suggestions
Best wishes

You're welcome

Dear STKO Team,

Was the issue with the PDMY03 model partition solved? I am using this model in STKO. My model converges using 1 to 4 processors, but using more than that causes the model to crash at different stages.


Kind regards.

It has been fixed here:
https://github.com/OpenSees/OpenSees/pull/1054

So the new OpenSees version should have this issue fixed

1, about InitialStateAnalysisWrapper, in the dynamic analysis of gravity balance simulation, some cases using (InitialStateAnalysis on/off), in some cases there is no use InitialStateAnalysis on/off), In opensees website (https://opensees.berkeley.edu/wiki/inde ... s_of_Slope) and OPenSesPL website (https://www.baidu.com/link?url=7Z2pPZDR ... 03637cedb9), however, according to the comparison of my simulation results, I found that sometimes the two results are similar, and sometimes they are quite different. Could you please tell me whether they are used in dynamic analysis?

As stated in the documentation, using the InitialStateAnalysisWrapper can create unwanted oscillations in transient analyses. It can be solved using a dummy slow analysis without any laod after the OFF command. But if you don't need to put a frame or shell structure on the soil domain, you don't really need the initial state wrapper at all.
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Hi STKO, what does the dummy slow analysis mean in this case?
I run dynamic analysis with user-defined modulus reduction curve (or yield surfaces) of PDMY material, but got the error:
"FATAL:PressureDependMultiYield::updateActiveSurface(): error in surface motion.
A= 4.66066e-20 B= 3.52034e-10 C= 2.72227e-13 (t1&&t1)= 2.65902"

However, it ran well if I remove the OFF command of IniitialStateAnalysis. you can check it in attached file

Thank you,
Buu,

"FATAL:PressureDependMultiYield::updateActiveSurface(): error in surface motion.
A= 4.66066e-20 B= 3.52034e-10 C= 2.72227e-13 (t1&&t1)= 2.65902"

It's a convergence error within the material. If you can avoid the initial state wrapper, don't use it