Machine Learning to predict a ship's fuel consumption in seaways
Fatigue cracks can be observed quite frequently on today’s ocean crossing vessels. To ensure the safety of ship structures sailing in the sea, it is important to know the residual fatigue life of these damaged ship structures. In this case, the fracture mechanics theory is often employed to estimate...
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ftchalmersuniv:oai:research.chalmers.se:245853 2023-05-15T17:35:03+02:00 Machine Learning to predict a ship's fuel consumption in seaways Mao, Wengang Brandholm, Pär Lenaers, Peter Salomonsson, Hans 2016 text https://research.chalmers.se/en/publication/245853 unknown https://research.chalmers.se/en/publication/245853 Energy Engineering Marine Engineering Probability Theory and Statistics uncertainty XFEM crack propagation ship structure Franc2D/3D Fracture mechanics Paris law 2016 ftchalmersuniv 2022-12-11T07:10:00Z Fatigue cracks can be observed quite frequently on today’s ocean crossing vessels. To ensure the safety of ship structures sailing in the sea, it is important to know the residual fatigue life of these damaged ship structures. In this case, the fracture mechanics theory is often employed to estimate how fast these cracks can propagate along ship structures. However, large uncertainties are always associated with the crack prediction and residual fatigue life analysis. In this study, two uncertainties sources will be investigated, i.e. the reliability of encountered wave environments connected with shipload determinations and different fracture estimation methods for crack propagation analysis. Firstly, different available codes based on fracture mechanic theory are used to compute the stress intensity factor related parameters for crack propagation analysis. The analysis is carried out for both 2D and 3D cases of some typical ship structural details. The comparison is presented to illustrate the uncertainties of crack propagation analysis related with different codes. Furthermore, it is assumed that the structural details will undertake dynamic loading from a containership operated in the North Atlantic. A statistical wave model is used to generate wave environments along recorded ship routes for different years. The uncertainties of crack growth analysis related with encountered weather environments is also investigated in the study. The comparison of these two uncertainties indicated the requirement of further development for the fracture mechanics theory and associated numerical codes, as well as the reliable life-cycle encountered weather environments. Other/Unknown Material North Atlantic Chalmers University of Technology: Chalmers research |
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Open Polar |
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Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Energy Engineering Marine Engineering Probability Theory and Statistics uncertainty XFEM crack propagation ship structure Franc2D/3D Fracture mechanics Paris law |
spellingShingle |
Energy Engineering Marine Engineering Probability Theory and Statistics uncertainty XFEM crack propagation ship structure Franc2D/3D Fracture mechanics Paris law Mao, Wengang Brandholm, Pär Lenaers, Peter Salomonsson, Hans Machine Learning to predict a ship's fuel consumption in seaways |
topic_facet |
Energy Engineering Marine Engineering Probability Theory and Statistics uncertainty XFEM crack propagation ship structure Franc2D/3D Fracture mechanics Paris law |
description |
Fatigue cracks can be observed quite frequently on today’s ocean crossing vessels. To ensure the safety of ship structures sailing in the sea, it is important to know the residual fatigue life of these damaged ship structures. In this case, the fracture mechanics theory is often employed to estimate how fast these cracks can propagate along ship structures. However, large uncertainties are always associated with the crack prediction and residual fatigue life analysis. In this study, two uncertainties sources will be investigated, i.e. the reliability of encountered wave environments connected with shipload determinations and different fracture estimation methods for crack propagation analysis. Firstly, different available codes based on fracture mechanic theory are used to compute the stress intensity factor related parameters for crack propagation analysis. The analysis is carried out for both 2D and 3D cases of some typical ship structural details. The comparison is presented to illustrate the uncertainties of crack propagation analysis related with different codes. Furthermore, it is assumed that the structural details will undertake dynamic loading from a containership operated in the North Atlantic. A statistical wave model is used to generate wave environments along recorded ship routes for different years. The uncertainties of crack growth analysis related with encountered weather environments is also investigated in the study. The comparison of these two uncertainties indicated the requirement of further development for the fracture mechanics theory and associated numerical codes, as well as the reliable life-cycle encountered weather environments. |
author |
Mao, Wengang Brandholm, Pär Lenaers, Peter Salomonsson, Hans |
author_facet |
Mao, Wengang Brandholm, Pär Lenaers, Peter Salomonsson, Hans |
author_sort |
Mao, Wengang |
title |
Machine Learning to predict a ship's fuel consumption in seaways |
title_short |
Machine Learning to predict a ship's fuel consumption in seaways |
title_full |
Machine Learning to predict a ship's fuel consumption in seaways |
title_fullStr |
Machine Learning to predict a ship's fuel consumption in seaways |
title_full_unstemmed |
Machine Learning to predict a ship's fuel consumption in seaways |
title_sort |
machine learning to predict a ship's fuel consumption in seaways |
publishDate |
2016 |
url |
https://research.chalmers.se/en/publication/245853 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://research.chalmers.se/en/publication/245853 |
_version_ |
1766134082237890560 |