Underwater motion tuning by passive heave compensation system (PHC) in floating offshore cranes at Aberdeen University on FindAPhD.com

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Dr M Aleyaasin, Dr M Kartal Applications accepted all year round Self-Funded PhD Students Only

About the Project

All off the floating offshore installation cranes are equipped with heave compensation systems. In harsh sea conditions and deepwater lifting operations, many cranes use passive heave compensation systems (PHC) that guarantees safe lowering or lifting of the subsea structures.

The compensation mechanism isolates motion of the vessel or FPSO (as a result of sea waves), from the lifting or rising payload, and thereby leads to minimum added mass and safe subsea installation.

Payload mass, and the rope elasticity are important parameters in setting the governing dynamical equations of the lifting system.

In deep water installation, polymeric ropes have been introduced for lifting operations and this introduces a lower stiffness in the multi-degree system of the compensator-payload system.

The aim of this research is studying the effect of rope stiffness on the performance of primary compensation (passive) system, which may lead to different calibration of the hydraulic cylinders used in these systems or a complete new design of them, for better performance .

Moreover, design of tuning system to optimise the system performance by adjusting damping and stiffness will be investigated.

The successful candidate should have, or expect to have, an Honours Degree at 2.1 or above (or equivalent) in mechanical engineering

Essential Background: Applied dynamics and computer programming.

Knowledge of: Familiar with system modelling via ODE,s and also a computer language (preferably MATLAB) .

Funding Notes

This project is for self-funded students only. There is no funding attached to this project. The successful applicant will be expected to pay Tuition Fees and living expenses, from their own resources, for the duration of study.

References

APPLICATION PROCEDURE:

This project is advertised in relation to the research areas of the discipline of Engineering. Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing.

NOTE CLEARLY THE NAME OF THE SUPERVISOR AND EXACT PROJECT TITLE YOU WISH TO BE CONSIDERED FOR ON THE APPLICATION FORM. Applicants are limited to applying for a maximum of 2 projects. Any further applications received will be automatically withdrawn.

Informal inquiries can be made to Dr M Aleeyasin (m.aleeyasin@abdn.ac.uk ) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

Where will I study?

Aberdeen University

The University of Aberdeen is the fifth oldest university in the UK and boasts over 500 years of research and teaching excellence.

Underwater motion tuning by passive heave compensation system (PHC) in floating offshore cranes

Aberdeen University School of Engineering