It's correctTherefore, the elastic analysis stage is only to obtain the initial ground stress. In this process, the performance of the soil does not change, because the parameters set by the soil are determined under this stress condition. The properties of soil will only change under the action of additional loads. In order to reflect the influence of external loads, it is necessary to activate the plastic phase. I don't know if I can interpret it that wa
Bounding Cam Clay Model
Re: Bounding Cam Clay Model
Re: Bounding Cam Clay Model
Thanks, this gives me a deeper understanding of the use of this constitutive model.
Best wishes!
Best wishes!
Re: Bounding Cam Clay Model
You're welcome
Re: Bounding Cam Clay Model
Dear STKOteam,
It's so weird!
I made a reloading cell test with a 1m×1m size， it worked well.
However, when I changed its' size to 200m×100m, it couldn't converge.
The two models have no difference except for the model size.
Could you help find out where the problem is?
Looking forward to your reply!
It's so weird!
I made a reloading cell test with a 1m×1m size， it worked well.
However, when I changed its' size to 200m×100m, it couldn't converge.
The two models have no difference except for the model size.
Could you help find out where the problem is?
Looking forward to your reply!
Last edited by Lei Lei on Mon Oct 28, 2024 11:34 am, edited 1 time in total.
Re: Bounding Cam Clay Model
Can you try with a coarser mesh?
When you have a very fine mesh, you should increase the tolerance in the test command, because it's a norm of a vector of errors! (If all DOFs have a small error, the norm will be larger as the number of DOFs increase)
When you have a very fine mesh, you should increase the tolerance in the test command, because it's a norm of a vector of errors! (If all DOFs have a small error, the norm will be larger as the number of DOFs increase)
Re: Bounding Cam Clay Model
Yes, it works for a simple model.
However, for a relatively complex model, the BCC's convergence ability seems poor.
I've tried to change the test tolerance, gird size, and steps with the most robust Newton algorithm, even for the first elastic stage.
However, for a relatively complex model, the BCC's convergence ability seems poor.
I've tried to change the test tolerance, gird size, and steps with the most robust Newton algorithm, even for the first elastic stage.
Last edited by Lei Lei on Mon Oct 28, 2024 11:34 am, edited 1 time in total.
Re: Bounding Cam Clay Model
The InitialStateAnalysisWrapper does not support the "materialState" keyword for parameters!
- InitWrapBCC.png (99.94 KiB) Viewed 802 times
Re: Bounding Cam Clay Model
The BoundingCamCly material needs "materialState" to enter the plastic stage.
Is there another method to conduct the initial analysis with BoundingCamCly material?
Re: Bounding Cam Clay Model
The initialStateAnalsysis is only useful when you are doing stage analysis and you want to reset the initial displacement to zero while keeping the initial stress.
Anyway it's not mandatory, just don't use it.
If you want to build other pieces of solids like in a construction stage there are other ways to do it without the initalStateAnalysis Wrapper
Anyway it's not mandatory, just don't use it.
If you want to build other pieces of solids like in a construction stage there are other ways to do it without the initalStateAnalysis Wrapper