Hey,
I am using the Plaxis 3D tutorial on suction pile as a base for my project where I am analysing the pullout capacity.
After calculations, how do I get the load-displacement curves? knowing that we did not add the load directly to the pile but as a resultant force.
The figure above shows the graphs I've got.
top left (Mstage vs displacement) and the rest are displacement vs force graphs.
The above graph shows a straight line, which does not reflect reality since there is some resistance before failure.
Basically, I am looking for a graph that shows me the load increments on the y-axis and displacement on the x-axis.
I would appreciate any input
Thanks
Dear Jozanga,
The load activation is linearly connected to the SumMStage value. So, you can use the SumMStage for your graph.
You need to save more calculation steps than the default value (set to 1), in Input, Phases window. That is the setting called Max number of steps stored:https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/45910/how-to-setup-the-number-of-steps-stored-in-plaxis-input
This will give you a more detailed curve.
If you need specific help, please submit a service request. Then, one of our support engineers can help you in detail: https://apps.bentley.com/srmanager/ProductSupport
Hey Stefanos,
I used 1000 calculation steps and the graph looks like this.
It does not show a curve showing resistance at lower loads and then failure like the one on the right-hand side.
Is the load I am using too high?
The only thing I can comment with this amount of information is just that the fact that you set the number of calculation steps to 1000 it does not mean that there will be 1000 steps. It is for the calculation kernel to solve the out-of-balance and determine how many steps are needed.
For instance, a linear elastic material can reach equilibrium within two steps. That is because the Numerical control parameter (behind the defaults setting) Max load fraction per step is by default set to 0.5. If you lower this property you can probably get more steps in the calculation.
As I mentioned before, if you need more assistance, please submit a service request. Then, one of our support engineers can help you in detail: https://apps.bentley.com/srmanager/ProductSupport