Experimental investigations into the current-induced motion of a lifeboat at a single point mooring

Hollyhead, Catherine J.; Townsend, Nicholas; Blake, J.I.R.

doi:10.1016/j.oceaneng.2017.09.045

Cited by 11 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main focus of the experimental evaluation was the performance of the boat in a range of different weather conditions. Hollyhead et al [8] and Hwang et al [9] performed experiments on launching boats from moving ships. They analyzed the motion parameters and the load of the boat.…”

Section: Related Workmentioning

confidence: 99%

Computational Model for Simulation of Lifeboat Free-Fall during Its Launching from Ship in Rough Seas

Qiu

Ren

2020

JMSE

View full text Add to dashboard Cite

In order to improve the accuracy of the freefall of lifeboat motion simulation in a ship life-saving simulation training system, a mathematical model using the strip theory and Kane’s method is established for the freefall of the lifeboat into the water from a ship. With the boat moving on a skid, the model of the ship’s maneuvering mathematical group (MMG) is used to model the motion of the ship in the waves. Based on the formula of elasticity and friction theory, the forces of the skid acting on the boat are calculated. When the boat enters the water, according to the analytical solution theory of slamming, the slamming force of water entry is solved. The simulation experiments are carried out by the established model. The results of the numerical simulation are compared with the calculation results of the hydrodynamics software Star CCM+ at water entry under initial condition A in the paper. The position and velocity of the center of gravity of the boat, the angle, and velocity and acceleration of pitch calculated by the two methods are in good agreement. There is a little difference between the values of translation acceleration calculated by the two methods, which is acceptable. This shows that our numerical algorithm has good accuracy. A qualitative analysis is performed to find the safe point of water entry under the condition of different wave heights and two situations of a ship encountering waves. Finally, the model is applied to the ship life-saving training system. The model can meet the system requirements and improve the accuracy of the simulation.

show abstract

Section: Related Workmentioning

confidence: 99%

Computational Model for Simulation of Lifeboat Free-Fall during Its Launching from Ship in Rough Seas

Qiu

Ren

2020

JMSE

View full text Add to dashboard Cite

show abstract

“…Figure 2 and Table 1 clearly show that as a charity with volunteer lifeboat crews operating under potentially dangerous conditions, they provide rich material for case studies in social and management sciences (83 of 124 terms). But the RNLI also has a wide engagement with the engineering science community through actively supported research, initiated through the RNLI’s engineering teams over the years, including Bob Cripps, 14–16 Steve Austen 17–19 and Holly Phillips. 20–22 The focus of this research is centred in the United Kingdom as indicated by the network of RNLI-associated researchers that have been cited in engineering fora, Figure 3 (Harzing’s Publish or Perish and Google Scholar).…”

Section: Rnli Research Areasmentioning

confidence: 99%

“…After 20 years and a growing confidence built through familiarity of designing and operating a composite fleet, the RNLI’s need for fundamental material knowledge evolved into research into the lifeboat by treating it as an integrated system, and research into composites centred instead around strategies for life extension and sustainable assets. 18,19,55,56 The future looks exciting with some of the most recent work in RNLI-associated research in tribology 26 and additive manufacturing 42 already generating considerable impact in the scientific community.…”

Section: Rnli Research Impactmentioning

confidence: 99%

A celebration of academic and industry collaboration: The Royal National Lifeboat Institution and Maritime Engineering innovation

Blake

Boyd

Phillips

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

Search and rescue craft have to endure the toughest conditions to save lives at sea. The design, resourcing, operation and support of a search and rescue fleet requires state-of-the-art technology and an ability to react to and exploit cutting edge research and foment future research agenda. This article reviews the unique relationships that exist between the Royal National Lifeboat Institution and academia to drive engineering innovations to the forefront of Royal National Lifeboat Institution’s search and rescue craft and in particular the legacy of the Advanced Technology Partnership.

show abstract

“…where η = dy/dx. The Equation (10) can be used to determine the horizontal load in each mooring line.…”

Section: Definition Of Environmental Loads and Reaction Forcesmentioning

confidence: 99%

“…In addition to the previously mentioned studies, significant contributions have been made to improving the mooring system's interaction and ship displacement in the ocean using realistic approaches considering dynamic loads [9][10][11][12][13][14]. Moreover, an interesting review of the modeling and control of thruster-assisted position mooring systems was presented in Skjetne and Zhengru [15].…”

Section: Introductionmentioning

confidence: 99%

A Simplified Numerical Method for the Design and Analysis of FPSO Platform Brackets Subjected to Operational Conditions

Martins

Pinto

Fragassa

et al. 2020

JMSE

View full text Add to dashboard Cite

The present work develops a simplified computational methodology to predict brackets’ mechanical behavior to support mooring systems’ fairleads under maximum environmental loads. The methodology consists of estimating environmental loads in Campos’s basin (Brazil) using standards available in the literature and applying them to determine the stress distribution in the brackets’ solid domain using a code based on the Finite Element Method. The brackets studied here are composed of AH36 steel plates. Six different geometric configurations for the brackets considering thinner plates than those ordinarily employed in the existent brackets of the P-66 Petrobras oil production platform were studied. Theoretical recommendations about geometric configurations to reduce the von Mises maximum stress in brackets’ plates were determined in the light of constructal design. The results proved the importance of the geometric investigation in this problem. For instance, for the accidental limit state (ALS) the best configuration leads to a mechanical performance two times superior to that reached for the worst one, which had a maximum stress superior to the yielding limit. Moreover, the best designs for the superior and inferior brackets in the ALS have different configurations.

show abstract

Experimental investigations into the current-induced motion of a lifeboat at a single point mooring

Cited by 11 publications

References 13 publications

Computational Model for Simulation of Lifeboat Free-Fall during Its Launching from Ship in Rough Seas

Computational Model for Simulation of Lifeboat Free-Fall during Its Launching from Ship in Rough Seas

A celebration of academic and industry collaboration: The Royal National Lifeboat Institution and Maritime Engineering innovation

A Simplified Numerical Method for the Design and Analysis of FPSO Platform Brackets Subjected to Operational Conditions

Contact Info

Product

Resources

About