2022

• Cao, Qun; Bachynski-Polic, Erin Elizabeth; Gao, Zhen; Xiao, Longfei; Cheng, Zhengshun; Liu, Mingyue. (2022) Experimental and numerical analysis of wind field effects on the dynamic responses of the 10 MW SPIC floating wind turbine concept. Ocean Engineering. volum 261.
  Vitenskapelig artikkel
• Zhao, Shujie; Meng, Xun; Gao, Zhen; Li, Huajun. (2022) Numerical modeling of nonstationary hydrodynamic forces and induced motions of a coupled offshore floating installation system. Ocean Engineering. volum 246.
  Vitenskapelig artikkel

2021

• Cheng, Zhengshun; Svangstu, Erik; Moan, Torgeir; Gao, Zhen. (2021) Assessment of inhomogeneity in environmental conditions in a Norwegian fjord for design of floating bridges. Ocean Engineering. volum 220.
  Vitenskapelig artikkel
• Cho, Seongpil; Choi, Minjoo; Gao, Zhen; Moan, Torgeir. (2021) Fault detection and diagnosis of a blade pitch system in a floating wind turbine based on Kalman filters and artificial neural networks. Renewable Energy. volum 169.
  Vitenskapelig artikkel
• Ren, Zhengru; Skjetne, Roger; Verma, Amrit Shankar; Jiang, Zhiyu; Gao, Zhen; Halse, Karl Henning. (2021) Active heave compensation of floating wind turbine installation using a catamaran construction vessel. Marine Structures. volum 75.
  Vitenskapelig artikkel
• Touzon, Imanol; Nava, Vincenzo; Gao, Zhen; Petuya, Victor. (2021) Frequency domain modelling of a coupled system of floating structure and mooring Lines: An application to a wave energy converter. Ocean Engineering. volum 220.
  Vitenskapelig artikkel
• Wu, Mengning; Gao, Zhen. (2021) Methodology for developing a response-based correction factor (alpha-factor) for allowable sea state assessment of marine operations considering weather forecast uncertainty. Marine Structures. volum 79 (103050).
  Vitenskapelig artikkel
• Xu, Kun; Larsen, Kjell; Shao, Yanlin; Zhang, Min; Gao, Zhen; Moan, Torgeir. (2021) Design and comparative analysis of alternative mooring systems for floating wind turbines in shallow water with emphasis on ultimate limit state design. Ocean Engineering. volum 219.
  Vitenskapelig artikkel

2020

• Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir. (2020) Extreme responses and associated uncertainties for a long end-anchored floating bridge. Engineering structures. volum 219.
  Vitenskapelig artikkel
• Jiang, Zhiyu; Yttervik, Rune; Gao, Zhen; Sandvik, Peter Christian. (2020) Design, Modelling and Analysis of a Large Floating Dock for Spar Floating Wind Turbine Installation. Marine Structures. volum 72.
  Vitenskapelig artikkel
• Moan, Torgeir; Gao, Zhen; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir. (2020) Recent Advances in Integrated Response Analsysis of Floating Wind Turbines in a Reliability Perspective. Journal of Offshore Mechanics and Arctic Engineering. volum 142 (5).
  Vitenskapelig artikkel
• Ren, Zhengru; Skjetne, Roger; Jiang, Zhiyu; Gao, Zhen. (2020) Active Single-Blade Installation Using Tugger Line Tension Control and Optimal Control Allocation. International Journal of Offshore and Polar Engineering. volum 30 (2).
  Vitenskapelig artikkel
• Wu, Mengning; Stefanakos, Christos; Gao, Zhen. (2020) Multi-step-ahead forecasting of wave conditions based on a physics-based machine learning (PBML) model for marine operations. Journal of Marine Science and Engineering. volum 8 (12).
  Vitenskapelig artikkel

2019

• Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir. (2019) Numerical Modeling and Dynamic Analysis of a Floating Bridge Subjected to Wind, Wave, and Current Loads. Journal of Offshore Mechanics and Arctic Engineering. volum 141 (1).
  Vitenskapelig artikkel
• Cheng, Zhengshun; Svangstu, Erik; Gao, Zhen; Moan, Torgeir. (2019) Field Measurements of Inhomogeneous Wave Conditions in Bjørnafjorden. Journal of waterway, port, coastal, and ocean engineering. volum 145 (1).
  Vitenskapelig artikkel
• Guo, Xiaoxian; Gao, Zhen; Li, Xin; Yang, Jianmin; Moan, Torgeir. (2019) Loading and blade deflection of a tidal turbine in waves. Journal of Offshore Mechanics and Arctic Engineering. volum 141 (4).
  Vitenskapelig artikkel
• Li, Liang; Gao, Zhen; Yuan, Zhi-Ming. (2019) On the sensitivity and uncertainty of wave energy conversion with an artificial neural-network-based controller. Ocean Engineering. volum 183.
  Vitenskapelig artikkel
• Verma, Amrit Shankar; Jiang, Zhiyu; Ren, Zhengru; Gao, Zhen; Vedvik, Nils Petter. (2019) Response-Based Assessment of Operational Limits for Mating Blades on Monopile-Type Offshore Wind Turbines. Energies. volum 12 (10).
  Vitenskapelig artikkel
• Verma, Amrit Shankar; Vedvik, Nils Petter; Gao, Zhen. (2019) A comprehensive numerical investigation of the impact behaviour of an offshore wind turbine blade due to impact loads during installation. Ocean Engineering. volum 172 (C).
  Vitenskapelig artikkel
• Verma, Amrit Shankar; Vedvik, Nils Petter; Haselbach, Philipp Ulrich; Gao, Zhen; Jiang, Zhiyu. (2019) Comparison of numerical modelling techniques for impact investigation on a wind turbine blade. Composite structures. volum 209.
  Vitenskapelig artikkel
• Wu, Mengning; Stefanakos, Christos; Gao, Zhen; Haver, Sverre Kristian. (2019) Prediction of short-term wind and wave conditions for marine operations using a multi-step-ahead decomposition-ANFIS model and quantification of its uncertainty. Ocean Engineering. volum 188.
  Vitenskapelig artikkel
• Xu, Kun; Min, Zhang; Shao, Yanlin; Gao, Zhen; Moan, Torgeir. (2019) Effect of wave nonlinearity on fatigue damage and extreme responses of a semi-submersible floating wind turbine. Applied Ocean Research. volum 91.
  Vitenskapelig artikkel
• Zhao, Yuna; Cheng, Zhengshun; Gao, Zhen; Sandvik, Peter Christian; Moan, Torgeir. (2019) Numerical study on the feasibility of offshore single blade installation by floating crane vessels. Marine Structures. volum 64.
  Vitenskapelig artikkel

2018

• Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir. (2018) Wave load effect analysis of a floating bridge in a fjord considering inhomogeneous wave conditions. Engineering structures. volum 163.
  Vitenskapelig artikkel
• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2018) Condition monitoring of spar‐type floating wind turbine drivetrain using statistical fault diagnosis. Wind Energy. volum 21 (7).
  Vitenskapelig artikkel
• Guo, Xiaoxian; Yang, Jianmin; Gao, Zhen; Moan, Torgeir; Lu, Haining. (2018) The Surface Wave Effects on the Performance and the Loading of a Tidal Turbine. Ocean Engineering. volum 156.
  Vitenskapelig artikkel
• Jiang, Zhiyu; Li, Lin; Gao, Zhen; Halse, Karl Henning; Sandvik, Peter Christian. (2018) Dynamic response analysis of a catamaran installation vessel during the positioning of a wind turbine assembly onto a spar foundation. Marine Structures. volum 61.
  Vitenskapelig artikkel
• Li, Qinyuan; Ren, Nianxin; Gao, Zhen; Moan, Torgeir. (2018) Efficient Determination of the Long-term Extreme Responses by the Modified Environmental Contour Method for a Combined Wind Turbine and Wave Energy Converter System. Journal of Ocean Engineering and Marine Energy. volum 4 (2).
  Vitenskapelig artikkel
• Luan, Chenyu; Gao, Zhen; Moan, Torgeir. (2018) Comparative analysis of numerically simulated and experimentally measured motions and sectional forces and moments in a floating wind turbine hull structure subjected to combined wind and wave loads. Engineering structures. volum 177.
  Vitenskapelig artikkel
• Zhao, Yuna; Cheng, Zhengshun; Sandvik, Peter Christian; Gao, Zhen; Moan, Torgeir. (2018) An integrated dynamic analysis method for simulating installation of single blades for wind turbines. Ocean Engineering. volum 152.
  Vitenskapelig artikkel

2017

• Cheng, Zhengshun; Madsen, Helge A.; Gao, Zhen; Moan, Torgeir. (2017) A fully coupled method for numerical modeling and dynamic analysis of floating vertical axis wind turbines. Renewable Energy. volum 107.
  Vitenskapelig artikkel
• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2017) Diagnostic monitoring of drivetrain in a 5 MW spar-type floating wind turbine using Hilbert spectral analysis. Energy Procedia. volum 137.
  Vitenskapelig artikkel
• Li, Qinyuan; Gao, Zhen; Moan, Torgeir. (2017) Modified environmental contour method to determine the long-term extreme responses of a semi-submersible wind turbine. Ocean Engineering. volum 142.
  Vitenskapelig artikkel
• Luan, Chenyu; Chabaud, Valentin Bruno; Bachynski, Erin Elizabeth; Gao, Zhen; Moan, Torgeir. (2017) Experimental validation of a time-domain approach for determining sectional loads in a floating wind turbine hull subjected to moderate waves. Energy Procedia. volum 137.
  Vitenskapelig artikkel
• Luan, Chenyu; Gao, Zhen; Moan, Torgeir. (2017) Development and verification of a time-domain approach for determining forces and moments in structural components of floaters with an application to floating wind turbines. Marine Structures. volum 51.
  Vitenskapelig artikkel
• Verma, Amrit Shankar; Vedvik, Nils Petter; Gao, Zhen. (2017) Numerical assessment of wind turbine blade damage due to contact/impact with tower during installation. IOP Conference Series: Materials Science and Engineering. volum 276.
  Vitenskapelig artikkel
• Wan, Ling; Greco, Marilena; Lugni, Claudio; Gao, Zhen; Moan, Torgeir. (2017) A combined wind and wave energy-converter concept in survival mode: Numerical and experimental study in regular waves with a focus on water entry and exit. Applied Ocean Research. volum 63.
  Vitenskapelig artikkel

2016

• Etemaddar, Mahmoud; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2016) Response analysis and comparison of a spar-type floating offshore wind turbine and an onshore wind turbine under blade pitch controller faults. Wind Energy. volum 19 (1).
  Vitenskapelig artikkel
• Gao, Zhen; Moan, Torgeir; Wan, Ling; Michailidis, Konstantinos. (2016) Comparative Numerical and Experimental Study of two Combined Wind and Wave Energy Concepts. Journal of Ocean Engineering and Science. volum 1 (1).
  Vitenskapelig artikkel
• Ghane, Mahdi; Rasekhi Nejad, Amir; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2016) Statistical fault diagnosis of wind turbine drivetrain applied to a 5MW floating wind turbine. Journal of Physics: Conference Series (JPCS). volum 753.
  Vitenskapelig artikkel
• Guachamin Acero, Wilson Ivan; Li, Lin; Gao, Zhen; Moan, Torgeir. (2016) Methodology for assessment of the operational limits and operability of marine operations. Ocean Engineering. volum 125.
  Vitenskapelig artikkel
• Li, Qinyuan; Gao, Zhen; Moan, Torgeir. (2016) Modified environmental contour method for predicting long-term extreme responses of bottom-fixed offshore wind turbines. Marine Structures. volum 48.
  Vitenskapelig artikkel
• Michailidis, Konstantinos; Gao, Zhen; Moan, Torgeir. (2016) Experimental and numerical study of the response of the offshore combined wind/wave energy concept SFC in extreme environmental conditions. Marine Structures. volum 50.
  Vitenskapelig artikkel
• Michailidis, Konstantinos; Gao, Zhen; Moan, Torgeir. (2016) Experimental study of the functionality of a semisubmersible wind turbine combined with flap-type Wave Energy Converters. Renewable Energy. volum 93.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Guo, Yi; Gao, Zhen; Moan, Torgeir. (2016) Development of a 5 MW reference gearbox for offshore wind turbines. Wind Energy. volum 19 (6).
  Vitenskapelig artikkel
• Shi, Wei; Tan, Xiang; Gao, Zhen; Moan, Torgeir. (2016) Numerical study of ice-induced loads and responses of a monopile-type offshore wind turbine in parked and operating conditions. Cold Regions Science and Technology. volum 123.
  Vitenskapelig artikkel
• Wan, Ling; Gao, Zhen; Moan, Torgeir; Lugni, Claudio. (2016) Comparative experimental study of the survivability of a combined wind and wave energy converter in two testing facilities. Ocean Engineering. volum 111.
  Vitenskapelig artikkel

2015

• Jiang, Zhiyu; Gao, Zhen; Moan, Torgeir. (2015) A comparative study of shutdown procedures on the dynamic responses of wind turbines. Journal of Offshore Mechanics and Arctic Engineering. volum 137 (1).
  Vitenskapelig artikkel
• Li, Lin; Gao, Zhen; Moan, Torgeir. (2015) Joint Distribution of Environmental Condition at Five European Offshore Sites for Design of Combined Wind and Wave Energy Devices. Journal of Offshore Mechanics and Arctic Engineering. volum 137 (3).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Kvittem, Marit Irene; Luan, Chenyu; Gao, Zhen; Moan, Torgeir. (2015) Stochastic dynamic load effect and fatigue damage analysis of drivetrains in land-based and TLP, spar and semi-submersible floating wind turbines. Marine Structures. volum 42.
  Vitenskapelig artikkel

2014

• Li, Lin; Gao, Zhen; Moan, Torgeir; Ormberg, Harald. (2014) Analysis of lifting operation of a monopile for an offshore wind turbine considering vessel shielding effects. Marine Structures. volum 39.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2014) On long-term fatigue damage and reliability analysis of gears under wind loads in offshore wind turbine drivetrains. International Journal of Fatigue. volum 61.
  Vitenskapelig artikkel

2013

• Muliawan, Made Jaya; Gao, Zhen; Moan, Torgeir. (2013) Application of the Contour Line Method for Estimating Extreme Responses in the Mooring Lines of a Two-Body Floating Wave Energy Converter. Journal of Offshore Mechanics and Arctic Engineering. volum 135 (3).
  Vitenskapelig artikkel
• Muliawan, Made Jaya; Gao, Zhen; Moan, Torgeir; Babarit, Aurélien. (2013) Analysis of a Two-Body Floating Wave Energy Converter with Particular Focus on the Effects of Power Take-Off and Mooring Systems on Energy Capture. Journal of Offshore Mechanics and Arctic Engineering. volum 135 (3).
  Vitenskapelig artikkel

2012

• Dong, Wenbin; Moan, Torgeir; Gao, Zhen. (2012) Fatigue Reliability Analysis of the Jacket Support Structure for Offshore Wind Turbine Considering the Effect of Corrosion and Inspection. Reliability Engineering & System Safety. volum 106.
  Vitenskapelig artikkel

2011

• Dong, Wenbin; Moan, Torgeir; Gao, Zhen. (2011) Long-term Fatigue Analysis of Multi-Planar Tubular Joints for Jacket-type Offshore Wind Turbine in Time Domain. Engineering structures. volum 33 (6).
  Vitenskapelig artikkel

2008

• Gao, Zhen. (2008) Stochastic Response Analysis of Mooring Systems with Emphasis on Frequency-domain Analysis of Fatigue due to Wide-band Response Processes. 2008. ISBN 9788247159835. Doktoravhandlinger ved NTNU (2008:11).
  Doktorgradsavhandling