<trans-title>Vibration Characteristics Analysis of Suction Bucket Jacket Offshore Wind Turbine in Different Boundary Conditions

Hongguan PAN; Chaohe CHEN

doi:10.16516/j.gedi.issn2095-8676.2021.02.006

SOUTHERN ENERGY CONSTRUCTION > 2021 > 8(2): 37-45. > DOI: 10.16516/j.gedi.issn2095-8676.2021.02.006 CSTR: 32391.14.j.gedi.issn2095-8676.2021.02.006

PAN Hongguan,CHEN Chaohe.Vibration Characteristics Analysis of Suction Bucket Jacket Offshore Wind Turbine in Different Boundary Conditions[J].Southern Energy Construction,2021,08(02):37-45.. DOI: 10.16516/j.gedi.issn2095-8676.2021.02.006

Citation:

Vibration Characteristics Analysis of Suction Bucket Jacket Offshore Wind Turbine in Different Boundary Conditions

Hongguan PAN^1,,
Chaohe CHEN^{1, 2}

1.
School of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510641， China
2.
Southern Marine Science and Engineering Guangdong Laboratory （Zhuhai）， Zhuhai 519080， China

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Received Date: March 18, 2021
Revised Date: April 27, 2021

Abstract

Abstract

Introduction The suction bucket jacket is a new type of offshore wind turbine foundation with many advantages， and its vibration characteristics are obviously different from those of traditional foundations. Correctly handling the boundary conditions of the infinite foundation is very important to accurately analyze the vibration problem， so this paper analyzes the vibration characteristics of the suction bucket jacket offshore wind turbine under different boundary conditions.
Method Taking a suction bucket jacket offshore wind turbine as the analysis object， a full three-dimensional finite element model of structure and soil coupling was established in ANSYS APDL， the influence of boundary conditions on the natural frequency was studied， and the sensitivity analysis of related parameters was carried out.
Result Different boundary conditions have a great influence on the natural frequency of the whole structure. Changing the boundary conditions has a greater influence on the axial stiffness and torsional stiffness than the bending stiffness of the structure. The natural frequency of the whole structure increases with the spring stiffness of the viscoelastic boundary， the elastic modulus of the soil， and the coefficients of friction between the bucket and soil.
Conclusion The related factors that affect the calculation accuracy of the natural frequency of the whole structure are analyzed， which can provide references for engineering calculations.
- modal analysis,
- viscoelastic boundary,
- suction bucket jacket,
- bucket-soil contact

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PAN Hongguan,CHEN Chaohe.Vibration Characteristics Analysis of Suction Bucket Jacket Offshore Wind Turbine in Different Boundary Conditions[J].Southern Energy Construction,2021,08(02):37-45.

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Chaohe CHEN

1.
School of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510641， China
2.
Southern Marine Science and Engineering Guangdong Laboratory （Zhuhai）， Zhuhai 519080， China

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Vibration Characteristics Analysis of Suction Bucket Jacket Offshore Wind Turbine in Different Boundary Conditions

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