The suction-pile model uses SHELL281 quadratic shell elements. The inner and outer soil models use SOLID186 quadratic solid elements.
Nonlinear frictional contact regions are defined between the outer soil and suction-pile skirt, and between the inner soil and suction-pile skirt, via CONTA174 / TARGE170 contact pairs.
The constant shell thickness of the suction-pile skirt is defined as ts = 20 mm, and the effective shell thickness of the suction-pile top as tT = 180 mm.
