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Hi,

Please could you help me understand why the following model must have the Master and Slave assignments for contact interactions.

The first interaction is between the outer pile surface (Master) and soil (Slave)

The second interaction is between the inner pile surface (Slave) and soil (Master ...

Here attached is a working model, I am not sure what is different between the two models. Please note that the Piles have different geometries.

Hi,

I am modelling a soil-pile interaction.

I am not sure what is wrong with my model/analysis, please could you advise?

it looks like the boundary conditions aren't working correctly.

Model is attached.

Many thanks in advance.

Hi,

Also please note that the previously given formula for isotropic stress was incorrect.

It should be:

UPDATE: My previous model was meshed incorrectly. As this is a test on an element, there should only be one element in the mesh. I have attached my updated model. How can I extract data to plot the graphs?

1. Deviatoric Stress vs Isotopic Stress

2. Deviatoric Stress vs Deviatoric Strain

3 ...

PLEASE NOTE: Throughout the test, the change in axial stress is non 0. However, the change in radial stress is 0. That is why in my model, I have applied the initial stresses through a constant time step. Then I have applied the displacement through a linear time step.

Dear STKO Team,

I am trying to do a triaxial test of a soil element.

Please see images, powerpoint and model to understand better.

I have produced a cube element, with dimensions of 0.1m, in the model attached. on 3 adjacent sides, there is a stress acting perpendicular to the face, which are an ...

Dear STKO Team.

Please see attached powerpoint clearly outlining some questions I have. The Models are also attached.

Thank you in advance

Dear STKO Team,

Thank you very much for your response and the modifications you provided to my model. I appreciate the guidance, but I would like to better understand the reasoning behind each change so I can properly apply these concepts in future analyses.

I have a few specific questions ...

STKO Team, thank you for your reply.

I am confused by the graph output, (attached) of reaction force against displacement for the top of the pile.

1. I was expecting a straight line, (increasing reaction force with increasing displacement, as my model currently is purely elastic), why is the graph ...