Design of Offshore Structural Components Including Fatigue & Structural Reliability

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Design of Offshore Structural Components Including Fatigue & Structural Reliability


The modelling of the fixed platforms as a 3D structural models, using beam elements will be taught. The response of the structure will be checked using codified rules in order to check the compliance of the structure. First principle design and analysis of beams, beam column, unstiffened and stiffened plates will be taught. Finally, the analysis and design of stiffened shells, which form a major structural component of many offshore structures such as Jacket platforms, compliant towers will be outlined, including structural reliability analysis of their shell structures. Following a general introduction to fatigue and fracture, with examples of service failures, current and developing fatigue design and assessment methods will be described. The course will go on to explain the importance of crack/flaw analysis in structural design and safety assessment and illuminate its wide range of applicability.
The course will include both ultimate and fatigue limit state check for the design of these types of foundations. The uncertainties of various design variables will also be discussed in these lectures. Lastly a reliability based design of stiffened shell will be covered.

Engineers and scientists involved in the design of offshore structures. Personnel from oil companies,
classification societies and offshore structure builders will benefits from attending this course. The course is innovative in both content & structure with a careful balance of theory & practice.


Day 1

09.00 – 10.30 Lecture 1: Plastic Design of Steel Structures

10.30 – 10.45 Break

10.45 – 12.15 Lecture 2 Design of column and beam column 1

12.15 – 13.30 Lunch

13.30 – 15:30 Lecture 3: Design of Column and beam Column & Tutorials

15:30-17:00 Lecture 4: Analysis and Design of Stiffened Plate-1

Day 2

09.00 – 10.30 Lecture 5: Analysis and Design of Stiffened Plate-2

10.30 – 10.45 Break

10.45 – 12.15 Lecture 6: Tutorials on Stiffened Plate

12.15 – 13.30 Lunch

13.30 – 15:30 Lecture 7: Design and Analysis of Stiffened Shells-1

15:30-17:00 Lecture 8: Design and Analysis of Stiffened Shells-2

Day 3

9:00– 10.30 Lecture 9: Tutorials on Stiffened Shells

10:30-10:45 Break

10.45 – 12.15 Lecture 10: Structure Reliability 1

12.15 – 13.30 Lunch

13.30 – 15:30 Lecture 11: Structure Reliability 2

15:30-17:00 Lecture 12: Tutorials on Structural Reliability

Day 4

09.00 – 10.30 Lecture 13: Introduction and S – N Curve

10.30 – 10.45 Break

10.45 – 12.15 Lecture 14: Effect of Stress Concentration specific to offshore structures

12.15 – 13.30 Lunch

13.30 – 15:30 Lecture 15: Rules for Fatigue design of Welded Structures, Effects of
Random Loads, Mean Stress, Thickness and Material Strength

15.30 – 17.00 Lecture 16: Application of Fracture Mechanics and
Post Weld Improvement Techniques

Professor Purnendu Das BE, ME, PhD, C.Eng, C.MarEng, FRINA, FIStructE, FIMarEST has been the Director of ‘ASRANet from its inception in February 2006. He retired as Professor of Marine Structures in the Department of Naval Architecture & Marine Engineering at the University of Strathclyde, UK. Past EU projects were MARSTRUCT (a network of excellence on Marine Structure) and SHIPDISMANTL (a cost effective and environmentally friendly dismantling of ship structures). Past industrial projects included work from the UK Health and Safety Executive (HSE), MoD UK, Subsea-7 UK, Shell, Wood group and US Navies etc. He was the principal investigator of many EPSRC projects. Before joining the University of Glasgow in 1991 he worked with British Maritime Technology as Principal Structural Engineer (1984-91). He is the author of more than 250 publications, including contract reports and more than 60 journal papers and was a member of the editorial boards of the ‘Journal of Marine Structures’, ‘Journal of Ship & Offshore Structures’, ‘Journal of Engineering under Uncertainty: Hazards, Assessment and Mitigation’ and ‘Journal of Ocean and Climate System’ amongst others. His areas of research include limit state design and analysis & reliability analysis of ship & offshore structures. Professor Das has wide ranging industrial and academic contacts and has advised and supervised 20 PhD students, to his credit.
Details of visits and collaborations include his various sabbatical study periods spent at University
of California, Berkeley, USA (July – September 1996), at Lloyd’s Register of Shipping (August1997),
Kockums Ltd (July 1998) and spent some time at Instituto Superior Técnico (IST), Lisbon
(July 2000). He has been running various successful CPD courses which are attracting many people from different industries. These courses are on ‘Fatigue & Fracture Analysis’, ‘Ships at Sea’, ‘Advanced Analysis and Design of Offshore Structures’, ‘Offshore Floating System Design’, ‘Structural Response under Fire and Blast Loading’ and ‘Design of Pipelines and Risers’ amongst others. He was a member of ISSC (International Ship and Offshore Structure Congress) for the periods of 1991-97 and 2003 – 2006. He was a member of the OMAE (Offshore Mechanics and Arctic Engineering) Organising Committee on ‘Safety and Reliability’. He has organised six ASRANet International Conferences in 2002 (Glasgow), 2004 (Barcelona), 2006 (Glasgow), 2008 (Athens), 2010 (Edinburgh) and 2012 (London) where a large number of participants from various countries attended. The theme of the conference is the integration of risk, advanced structural analysis and structural reliability analysis as applicable to various engineering structures. He was the member
of Research committee of the Institution of Structural Engineers (I.Struct.E) London for 3 years
(2014-2017). He was a visiting professor at Wuhan University of Technology, China from July 2016-July 2019. At present he is a visiting professor at the University of Montenegro, Montenegro.

Dr Helena has more than 30 years’ experience, and is internationally recognised as a fatigue expert,
specialising in the development of spectral fatigue analysis and fatigue assessment procedures for a
wide variety of ship types and offshore structures. Dr Helena also has expertise in fatigue related
consultancy and research including fatigue testing and numerical analysis as well as the development and delivery of fatigue training. Helena was awarded a Royal Society Fellowship in 1994 for her Post-Doctoral research

Duration: 4 Days

Cost: £1,495 + VAT

Design of Offshore Structural Components Including Fatigue & Structural Reliability Training in London, Scotland,  Inverness, Aberdeen, Glasgow, Edinburgh, Dunfermline and other sites throughout the UK including onsite closed company courses are available.

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