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Bernt J. Leira
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Proceedings Papers

Bayesian Updating by Utilization of Bayesian Optimization for Estimation of VIV Load Parameters

Bernt J. Leira, Martin L. Andersen, Jie Wu, Svein Sævik
Proc. ASME. OMAE2024, Volume 2: Structures, Safety, and Reliability, V002T02A006, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-122594
https://doi.org/10.1115/OMAE2024-122594
View Paper titled, Bayesian Updating by Utilization of Bayesian Optimization for Estimation of VIV Load Parameters
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Topics: Optimization, Stress, Vortex-induced vibration
Proceedings Papers

Strength Analysis of Icebreak Ramming Sea Ice With Extreme Thickness Along the Northern Sea Route

Anqi Bian, Wei Chai, Haibo Dong, Zhaolong Yu, Bernt J. Leira, Fanghuai Xiong
Proc. ASME. OMAE2024, Volume 6: Polar and Arctic Sciences and Technology; CFD, FSI, and AI, V006T07A017, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-127228
https://doi.org/10.1115/OMAE2024-127228
View Paper titled, Strength Analysis of Icebreak Ramming Sea Ice With Extreme Thickness Along the Northern Sea Route
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Topics: Sea ice, Seas, Stress
Proceedings Papers

Extreme Value Analysis of Ship Roll Motion With Consideration of Ice Accumulation

Wei Chai, Jianzhang Qi, Bernt J. Leira, Chana Sinsabvarodom, Longxia Yang, Shunying Ji
Proc. ASME. OMAE2024, Volume 6: Polar and Arctic Sciences and Technology; CFD, FSI, and AI, V006T07A003, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-127072
https://doi.org/10.1115/OMAE2024-127072
View Paper titled, Extreme Value Analysis of Ship Roll Motion With Consideration of Ice Accumulation
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Topics: Ice, Ships, Stability, Waves
Proceedings Papers

Development of the Environmental Contour for Ice Drift Speed and Wind Speed

Chana Sinsabvarodom, Bernt J. Leira, Knut V. Høyland, Wei Chai, Kittikun Jitpairod, Waraporn Nuntiyakul, Achara Seripienlert
Proc. ASME. OMAE2024, Volume 6: Polar and Arctic Sciences and Technology; CFD, FSI, and AI, V006T07A001, June 9–14, 2024
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2024-122581
https://doi.org/10.1115/OMAE2024-122581
View Paper titled, Development of the Environmental Contour for Ice Drift Speed and Wind Speed
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Topics: Ice, Wind velocity
Journal Articles

Reliability Analysis of Crack Growth Occurrence for a Secondary Hull Component Due to Vibration Excitation

Siri Kolle Kleivane, Bernt J. Leira, Sverre Steen
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. October 2024, 146(5): 051702.
Paper No: OMAE-23-1097
https://doi.org/10.1115/1.4064499
Published Online: January 29, 2024
View Article titled, Reliability Analysis of Crack Growth Occurrence for a Secondary Hull Component Due to Vibration Excitation
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Topics: Engines, Excitation, Failure, Fracture (Materials), Hull, Pipes, Probability, Reliability, Stress, Vibration
Journal Articles

Analyzing the Sensitivity of Wave Frequency Responses of Floating Vessels to Uncertain System Variables Utilizing Polynomial Chaos Expansion

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Xu Han
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. June 2024, 146(3): 031702.
Paper No: OMAE-23-1063
https://doi.org/10.1115/1.4063619
Published Online: December 11, 2023
View Article titled, Analyzing the Sensitivity of Wave Frequency Responses of Floating Vessels to Uncertain System Variables Utilizing Polynomial Chaos Expansion
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Topics: Chaos, Polynomials, Vessels, Sensitivity analysis, Waves, Uncertainty
Proceedings Papers

Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Konstantinos Christakos
Proc. ASME. OMAE2023, Volume 5: Ocean Engineering, V005T06A060, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104877
https://doi.org/10.1115/OMAE2023-104877
View Paper titled, Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis
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Topics: Buoys, Ocean waves, Radar, Spectra (Spectroscopy), Waves, Transfer functions, Vessels, Computer simulation, Decision making, Dispersion (Optics)
Proceedings Papers

On the Relationship Between Spectral Models of Ice Drift and Wind Turbulence

Chana Sinsabvarodom, Bernt J. Leira, Knut V. Høyland, Wei Chai, Arvid Naess, Gowtham Radhakrishnan
Proc. ASME. OMAE2023, Volume 6: Polar and Arctic Sciences and Technology, V006T07A001, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104751
https://doi.org/10.1115/OMAE2023-104751
View Paper titled, On the Relationship Between Spectral Models of Ice Drift and Wind Turbulence
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Topics: Ice, Turbulence, Wind
Proceedings Papers

A Methodology for Tuning of Computational Vessel Models Utilizing Wave Measurements From X-Band Marine Radar and Wave Buoy

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Karl E. Kaasen, Konstantinos Christakos, Johann A. Dirdal
Proc. ASME. OMAE2023, Volume 2: Structures, Safety, and Reliability, V002T02A010, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104492
https://doi.org/10.1115/OMAE2023-104492
View Paper titled, A Methodology for Tuning of Computational Vessel Models Utilizing Wave Measurements From X-Band Marine Radar and Wave Buoy
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Topics: Buoys, Entropy, Radar, Vessels, Waves
Proceedings Papers

On Design Parameters for Accidental Ice Loading on Ship Hulls

Bernt J. Leira, Wei Chai, Gowtham Radhakrishnan
Proc. ASME. OMAE2022, Volume 6: Polar and Arctic Sciences and Technology, V006T07A031, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-81304
https://doi.org/10.1115/OMAE2022-81304
View Paper titled, On Design Parameters for Accidental Ice Loading on Ship Hulls
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Topics: Design, Hull, Ice, Ships
Proceedings Papers

Short-Term Extreme Response Prediction for a Jacket Platform Subjected to Nonlinear Wave Loads

Wei Chai, Xiangpeng Yu, Bernt J. Leira, Jian Gu
Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A046, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-80095
https://doi.org/10.1115/OMAE2022-80095
View Paper titled, Short-Term Extreme Response Prediction for a Jacket Platform Subjected to Nonlinear Wave Loads
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Topics: Nonlinear waves, Stress
Proceedings Papers

Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Alojz Gomola
Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A018, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-78912
https://doi.org/10.1115/OMAE2022-78912
View Paper titled, Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements
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Topics: Spectra (Spectroscopy), Vessels, Waves, Optimization, Uncertainty, Errors, North Sea, Ocean engineering, Physics
Proceedings Papers

Short-Term Analysis of Ship Capsizing Probability in Random Seas

Wei Chai, Lin He, Bernt J. Leira, Chana Sinsabvarodom, Peiyuan Feng
Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A025, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-80098
https://doi.org/10.1115/OMAE2022-80098
View Paper titled, Short-Term Analysis of Ship Capsizing Probability in Random Seas
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Topics: Probability, Seas, Ships
Proceedings Papers

A Framework for Condition Monitoring and Risk-Based Decision Support Involving a Vessel State Observer

Xu Han, Bernt J. Leira, Svein Sævik, Gowtham Radhakrishnan, Stian Skjong, Lars T. Kyllingstad
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A018, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-61850
https://doi.org/10.1115/OMAE2021-61850
View Paper titled, A Framework for Condition Monitoring and Risk-Based Decision Support Involving a Vessel State Observer
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Topics: Condition monitoring, Risk, State estimation, Vessels, Sensors, Data acquisition, Inertia (Mechanics), Waves, Center of mass, Damping
Proceedings Papers

Fatigue Assessment of Mooring Chain Considering the Effects Of Mean Load and Corrosion

Erling N. Lone, Thomas Sauder, Kjell Larsen, Bernt J. Leira
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A020, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62775
https://doi.org/10.1115/OMAE2021-62775
View Paper titled, Fatigue Assessment of Mooring Chain Considering the Effects Of Mean Load and Corrosion
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Topics: Chain, Corrosion, Fatigue, Mooring, Stress, Design, Engineering design processes, Fatigue life, Fatigue testing, Ocean engineering
Proceedings Papers

Probabilistic Fatigue Assessment of a Mooring Line Based on Station-Keeping Trials in Ice

Chana Sinsabvarodom, Bernt J. Leira, Wei Chai, Arvid Naess
Proc. ASME. OMAE2021, Volume 7: Polar and Arctic Sciences and Technology, V007T07A015, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62924
https://doi.org/10.1115/OMAE2021-62924
View Paper titled, Probabilistic Fatigue Assessment of a Mooring Line Based on Station-Keeping Trials in Ice
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Topics: Fatigue, Ice, Mooring, Stress
Proceedings Papers

Influence of Mean Tension on Mooring Line Fatigue Life

Erling N. Lone, Bernt J. Leira, Thomas Sauder, Vegard Aksnes, Øystein Gabrielsen, Kjell Larsen
Proc. ASME. OMAE2020, Volume 2A: Structures, Safety, and Reliability, V02AT02A053, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18628
https://doi.org/10.1115/OMAE2020-18628
View Paper titled, Influence of Mean Tension on Mooring Line Fatigue Life
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Topics: Fatigue life, Mooring, Tension, Stress, Design, Fatigue damage, Semi-submersible offshore structures, Chain, Cycles, Engineering simulation
Proceedings Papers

Future Scenarios for Arctic Shipping

Martin Bergström, Bernt J. Leira, Pentti Kujala
Proc. ASME. OMAE2020, Volume 7: Polar and Arctic Sciences and Technology, V007T07A006, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18166
https://doi.org/10.1115/OMAE2020-18166
View Paper titled, Future Scenarios for Arctic Shipping
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Topics: Arctic region, Climate change, Natural resources
Proceedings Papers

Dynamic Behavior of a Novel Heave-Compensated Floating Platform for Well Interventions

Marcelo A. Jaculli, Bernt J. Leira, Sigbjørn Sangesland, Celso K. Morooka, José Ricardo P. Mendes
Proc. ASME. OMAE2020, Volume 11: Petroleum Technology, V011T11A051, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18472
https://doi.org/10.1115/OMAE2020-18472
View Paper titled, Dynamic Behavior of a Novel Heave-Compensated Floating Platform for Well Interventions
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Topics: Buoyancy, Cables, Design, Displacement, Drilling, Drillships, Floating structures, Modeling, North Sea, Pipeline risers
Proceedings Papers

Extreme Value Estimation of Mooring Loads Based on Station-Keeping Trials in Ice

Chana Sinsabvarodom, Bernt J. Leira, Wei Chai, Arvid Naess
Proc. ASME. OMAE2020, Volume 7: Polar and Arctic Sciences and Technology, V007T07A018, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18172
https://doi.org/10.1115/OMAE2020-18172
View Paper titled, Extreme Value Estimation of Mooring Loads Based on Station-Keeping Trials in Ice
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Topics: Ice, Mooring, Stress