MECHGN02 Ship Structures
The aim of the course is to give the student an advanced theoretical grounding in one of the fundamental analytical discipline fields of Naval Architecture and Ocean Engineering. Other fields are ship hydrodynamics and ship dynamics.
||MECHM014, MECH4014 (until 2012)
||Dr. PJ Tan
Dr. Mark Selfridge (Module Coordinator)
Three major items of coursework.
Ship Structural Design
Ship structural design, its place and aim in ship design;
Rational approach, primary, secondary, tertiary structure;
Quasi-static wave balance;
Probabilistic structural response;
Dynamic response effects;
Longitudinal strength, efficiency of structure and superstructure;
Ultimate longitudinal strength;
Statistical derivations, reliability methods;
Philosophies and ship structural design procedures, cost, optimisation;
Transverse torsional and lateral strength’
Unconventional vehicles and structures.
Finite Element Analysis
Matrix method of structural analysis, nomenclature and algebra.
Stiffness matrix for discrete members.
Force and displacement methods, merge process, transformation, substructuring.
Stiffness matrix for continuum.
General element requirements.
Errors, convergence, modelling, mesh generation.
Grillage synthesis commencing with midship section effective thickness;
Modes of grillage failure under range of expected loadings;
Use of typical design data for grillage synthesis;
Preliminary ship grillage design methods, computer aided grillage synthesis.
Subsea Structural Design
Stress analysis of axisymmetric stiffened cylinders under external pressure;
Principal buckling pressures,
Behaviour of approximately circular cylinders;
Prediction of structural collapse modes;
Design procedures and codes;
Structural design of stiffened cones dome bulkheads;
Internal structure discontinuities and penetrations;
Developments in fatigue and non linear behaviour due to residual stress;
Applications to offshore structures.