Modelling hysteretic damping of soils for monopiles
Modelling hysteretic damping of soils for monopiles
This paper proposes a new method to evaluate the hysteretic soil damping in offshore wind turbines (OWT) with monopiles. Soil damping is a key factor affecting the design of OWT and its fatigue life span. Dynamic 3D finite element analyses incorporating the Hardening Soil-small model are performed. The OWT damping is obtained from the decay of tower displacements. Depending on the expected monopile deflections and soil stiffness, it is found that the widely adopted Cook and Vandiver (1982) method from the oil and gas industry, can underestimate the soil hysteretic damping.
A. R. Leon Bal; Mustafa Jafari; L. A. Berenguer Todo Bom; Majid Goodarzi
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
E - Environment, water and energy
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