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A Simulation of Non-Simultaneous Ice Crushing Force for Wind Turbine Towers with Large Slopes

1
School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2
State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
3
State Key Laboratory of Coast and Offshore Engineering, Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(13), 2608; https://doi.org/10.3390/en12132608
Received: 24 May 2019 / Revised: 26 June 2019 / Accepted: 29 June 2019 / Published: 7 July 2019
(This article belongs to the Special Issue Recent Advances in Offshore Wind Technology)
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Abstract

When the offshore wind energy industry attempts to develop in cold regions, ice load becomes the main technological challenge for offshore wind turbine foundation design. Dynamic ice loads acting on wind turbine foundations should be calculated in a reasonable way. The scope of this study is to present a numerical model that considers the non-simultaneous ice crushing failure acting on the vertical structure of a wind turbine’s foundation. The local ice crushing force at the contact surface between the ice sheet and structure is calculated. The boundary of the ice sheet is updated at each time step based on the indentation length of the ice sheet according to its structure. Ice loads are validated against two model tests with three different structure models developed by other researchers. The time series of the ice forces derived from the simulation and model tests are compared. The proposed numerical model can capture the main trends of ice–wind turbine foundation interaction. The simulation results agree well with measured data from the model tests in terms of maximum ice force, which is a key factor for wind turbine design. The proposed model will be helpful for assisting the initial design of wind turbine foundations in cold regions. View Full-Text
Keywords: crushing; icebreaking; wind turbine; cone crushing; icebreaking; wind turbine; cone
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Zhou, L.; Ding, S.; Song, M.; Gao, J.; Shi, W. A Simulation of Non-Simultaneous Ice Crushing Force for Wind Turbine Towers with Large Slopes. Energies 2019, 12, 2608.

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