Analysis & Design of Submarine Structures – 3 Day

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Analysis & Design of Submarine Structures – 3 Day


Most submarine designs are weight critical, especially as operational diving depth increases. It
follows that designers will strive to select an available high strength low density material
compatible with good fabricability and toughness.  Toughness is required not only for the usual low
temperature reasons, but also to resist high dynamic loads from depth charge attack. High
strength steels have proved to be reasonably satisfactory, the main limitation being how to
achieve adequate weldability and toughness for military submarines with steels above about
700N/mm2 proof stress. More exotic materials would be considered for depths exceeding 1000m
say. At really great depths the required pressure hull thicknesses can become so large that buckling
ceases to be a problem even with low modulus materials and frames can effectively be dispensed
with. In many respects the design then becomes simpler and the conventional safety factor can be
reduced. This course is meant to provide comprehensive coverage of structural design and
also concentrate on philosophy and underlying essentials and strength formulations for design.

The course is intended for Engineers, Operations managers, Fabricators, Applied Scientists and
Technologists interested in submarine design.


Day 1

08:30-09:00 Delegate Registration

09.00- 10.30 Lecture 1: Buckling of Shells Under External Pressure
Prof Purnendu Das

10.30-11.00 Break

11.00-12.30 Lecture 2: Materials Behaviour and Fabrication Tolerance
Prof Purnendu Das

12.30-13.30 Lunch

13.30-15.30 Lecture 3: Materials Behaviour: Tutorial
Prof Purnendu Das

15.30-16.00 Break

16.00-17.00 Lecture 4: Submarine Design- Various Failure Modes I
Prof Purnendu Das

Day 2

09.00-10.30 Lecture 5: Submarine Theory I
Prof Purnendu Das

10.30-11.00 Break

11.00-12.30 Lecture 6: Submarine Theory II
Prof Purnendu Das

12.30-13.30 Lunch

13.30-15.00 Lecture 7: Design Codes Examples I – PD 5500-2015
Prof Purnendu Das

15.00-15.30 Break

15.30-17.00 Lecture 8: Design Codes Examples II – PD 5500-2015
Prof Purnendu Das

Day 3
09.00 –10.30 Lecture 9: Structural Reliability
Prof Purnendu Das

10.30-11.00 Break

11.00–12.30 Lecture 10: Structural Reliability & Application to Submarine Structures
Prof Purnendu Das

12.30-13.30 Lunch

13.30-15.00 Lecture 11: PD 5500-2015 Tutorial I
Prof Purnendu Das

15.00-15.30 Break

15.30-17.00 Lecture 12: PD 5500-2015 Tutorial II
Prof Purnendu Das

Lecturers CVs:

Purnendu Das. BE, ME, PhD, C.Eng, C.MarEng, FRINA, FIStructE, FIMarEST has been the Director of ‘ASRANet Ltd’ since February 2006. He retired as a Professor of Marine Structures in the Department of Naval Architecture & Marine Engineering at the University of Strathclyde, UK in September 2011. 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, Woodgroup 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 is a member of the editorial boards of the ‘Journal of Marine Structures’, ‘Journal of Ocean and Ship Technology’ and ‘Journal of Ocean and Climate System’ and the Journal of Ship Mechanics
amongst others. His areas of research include limit state design and analysis & reliability analysis of ship & offshore structures.

Purnendu 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 (August 1997), Kockums Ltd (July 1998) and spent some time at Instituto Superior Técnico (IST), Lisbon (July 2000). He is running about 20 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 is running about 15 biennial
international conferences on various themes like Risk, Reliability, Advanced Analysis & Design of Engineering Structures, including marine structures. He was a member of the “Research Committee” of Structural Engineers (IStructE) during 2012-2015. He was a visiting Professor at IST Surabaya,
Indonesia from July 2015 for one year. He is now a visiting professor at the Wuhan University of Technology, China from July 2016.

Past Participants

  • CSBC Corporation, Taiwan
  • Marine Systems PVT, Pakistan
  • BMT Defence Services
  • Italian Navy
  • Norwegian Navy
  • Netherlands Navy
  • Indian Navy
  • US Navy
  • Canadian Navy
  • Lloyd’s Register of Shipping, UK
  • Korean Register of Shipping
  • BAE Systems
  • Ministry of Defence
  • Frazer-Nash Consultancy
  • Babcock International
  • Qinetiq

Duration: 3 Days

Cost: £950 + VAT

Analysis and Design of Submarine Structures in Scotland,  Inverness, Aberdeen, Glasgow, Edinburgh, Dunfermline and other sites throughout the UK including onsite closed company courses are available.

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