I use the surface-to-surface contact behavior to model the monopile-soil interaction, which is a combination of the Coulomb friction law for the tangential interaction behaviour and hard contact for normal interaction behaviour.
In the simulation results, CPRESS and CNORMF are used to extract the horizontal soil pressure on the pile under static conditions. It is observed that the values of CPRESS near the bottom of the pile do not follow a regular pattern, and the values of CNORMF are significantly lower. Doubling the CNORMF values aligns them with the pattern of CPRESS, but they still do not show a linear increase. Is there any special treatment required when simulating contact with corners（i.e. pile base）?
Liu Rui, The drop in CNORMF (normal contact force) at the end of the pile at the base node is due to the presence of the boundary condition on the node. For more send me the file to examine further on Https://wa.me/+923440907874
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