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Advances in Mathematical Physics
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Advances in Mathematical Physics
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2021
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Article
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Tab 2
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Research Article
An Accurate Estimation of the Eigenfrequency of an Offshore Wind Turbine Considered as the Stepped Euler-Bernoulli Beam in Three-Spring Flexible Foundation Using the Power Series Method
Table 2
Characteristics of the ZJU-P offshore wind turbine.
Wind parameters
Symbols
Units
ZJU-P (
)
(1) Rotor-nacelle assembly mass
Ton
218.28
(2) Total height of wind turbine
m
106.67
(3) Tower bottom diameter
m
3.16
(4) Tower top diameter
m
5.5
(5) Tower Young’s modulus
GPa
210
(6) First part height
m
28
(7) Tower wall thickness
mm
75
(8) Monopile diameter
m
5.5
(9) Monopile wall thickness
mm
75
(10) Monopile Young’s modulus
GPa
210
(11) Lateral stiffness of foundation
GN/m
0.206
(12) Cross-stiffness of foundation
GN
−3.08
(13) Rotational stiffness of foundation
GNm/rad
83.3