... container ship hydraulic fracturing deformation crack propagation superposition sea state hull structure ultra-large container ship spectrum crack size analysis method fatigue crack propagation short-term sailing condition fatigue life Proceedings of the Thirty-third (2023) International...

... ABSTRACT This paper presents a machine learning-based approach for estimating sloshing activity in a liquefied natural gas (LNG) tank using several measurable inputs, such as sea states and ship accelerations. The proposed method involves training a model from experimental data and using...

... be automatically updated when sea state changes. Compared with LSTM model, when the prediction durations are 0.5s, 1s, 2s, and 3s, the prediction accuracies increased by 4.7%, 13.4%, 20.5% and 30.8% respectively; For heaves caused by instant large-scale waves, the RMSEs relatively decreased by 64.8%, 52.6%, 45.5...

... ABSTRACT A method is proposed to convert the fatigue damage of each sea state to a constant stress range value. Firstly, the FE model of the semi-submersible platform is established. Secondly, the procedures of the spectral-based fatigue analysis method are clarified. The element with Maximum...

... by a Proportional (P) and Proportional Integral (PI) IM controller in the peak wave frequency of the design sea state, equivalent to a resistive and reactive controller, respectively. These causal IM controllers are implemented in a MATLAB-Simulink real-time control environment and experimentally tested...

... to reduce snap loads. Results are presented for a wide range of irregular sea states, varying significant wave height, wave period and directional spreading. Increasing directional spreading is found to reduce the maximum and standard deviations of the leading mooring line loads by up to 30-40% compared...

... ABSTRACT This study proposes an artificial neural network (ANN) model to inversely estimate sea states from the motion signals of floating structures measured on board. A generic moored FPSO (floating production storage and offloading) is modeled and 6DOF-motion time-series data are generated...

... floating production system china government upstream oil & gas platform frequency natural period south china sea mooring system sea state response spectrum nuclear power plant spar sub-sea system characteristic maximum tension hydrodynamic performance fpso dcop coordinate system cdp...

...% in 2050, and stop GHG emissions by 2100. For ships that have already been built, energy efficiency optimization is an effective way to reduce GHG emissions from fuel consumption. Hence, how to improve the energy efficiency level of ships in complex and changeable sea states is the key to the problem...

... government sustainability artificial intelligence wind energy sea state sustainable development wrp model elevation sub-sea system float motion wave gauge prediction zone algorithm icwm experiment grilli control system surface elevation wave component wave reconstruction prediction...

... system is modelled by using ideal elements. The study focuses on surge, heave and pitch modes. The objective of the study is to evaluate the power capture performance of the system and it is shown that the system performs well for sea states with H s of 2 meters or higher. INTRODUCTION There has...

... government wave energy converter talos wave energy converter sea state energy period probable sea state different wave climate complex amplitude spectrum Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023...

... damping levels vary with sea states and the results obtained with experiments and simulations are compared, focusing on the heave, roll and pitch response spectrum and short-term statistics, it is shown that the frequency spectrum analysis method may underestimates the response and ignores the pitch-surge...

...-wave configuration was validated. Through the comparative study on two hang-off positions on the FOWT, results showed in extreme sea states the configuration favored a higher hang-off point at the deck box, while the fatigue estimation revealed a lower position of hang-off provided superior performance...

... machine learning motion response heave network model artificial intelligence output data hot spot fatigue damage fatigue damage prediction neural network prediction sea state response spectrum calculation fatigue damage ship motion reference data mesh ABSTRACT A novel...

... faces rough sea state. Facing with rough sea state, roll and pitch of ship is too large to comply with strict quality requirement. It is not easy to predict if the ship can construct, because it needs accurate sea state, ship motion response, and motion limitation requirement. The construction...

... ABSTRACT Within the Joint Research Project RetroLadung, weight-optimized cell guides with integrated motion sensors and data-driven decision support systems (DSS) are developed. A basic functionality of the DSS is the estimation of sea states based on measurement data from acceleration sensors...

... the analysis. Several parameters were used to train the datasets and predict which sea state would lead to wider heading angles by ANN. Such results were compared to the long-term responses calculated with the mean heading angles in this study. INTRODUCTION Floating offshore structures operating at fixed...

... sea state service performance simulation frequency response function short wavelength region equation coefficient Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society...

.... mast investigation fatigue analysis ay 0 load condition fatigue life mast base sea state fatigue phenomenon gravity calculation structural component stress distribution fatigue damage navigation procedure ship evaluation ax 0 alii Proceedings of the Thirty-second (2022...