Description
Objectives
To analyse ship hull structure and its components using the finite element method. To know how to generate finite element models and to choose different techniques for solutions and analyses of thin-walled structures, including plates, stiffened panels, grillage, portal frame systems and entire ship hull structure. To know how to analyse hot-spot and crack growth descriptors, buckling, non-linear strength, thermal effects, including distortion and residual stresses in intact and degraded ship structures. To know different techniques for modelling and analysing of ship structures applying commercial software.
Syllabus
Introduction to a ship structural analysis based on the Finite Element Method. Direct and energy formulation. FE solutions for bars, beams, portal frames and grillages and its application to the midship section, deck, sideshell and bottom structures of the ship. Modelling and analysis of secondary ship structures, including plates, shells and reinforced panels. Modelling and structural analysis of ship hull modules and applications of sub-modelling techniques. Shear, bending and tortion FE modelling and analysis. FE application in performing hot-spot and notch stress analyses and fracture mechanics applications. Thermal steady-state and transient analyses. Welding induced residual stress and distortion analyses. Transient, modal and harmonic dynamic analysis. Geometric, material and status nonlinearity impact. Non- linear strength assessment of intact and degraded ship structures.
Cross Competence Component
The UC allows the development of transversal competences on critical thinking, namely strategic thinking and problem solving approaches, within the assignemnts, flash and paper presentations, and project. Interpersonal and intrapersonal skills (oral, organizational and teamwork, self-discipline, perseverance, self-motivation skills - within the assignemnts, flash and paper presentations, and project) and Information and media literacy (ability to locate and access information, as well as to analyze and evaluate media content - within the assignemnts, flash and paper presentations, and project). The assessment percentage associated with these competences is 20%.
Programming And Computing Component
Development of applications either in Matlab or in spreadsheet(s) and ANSYS. These components account for about 20% of the final grade.
Ethical Principles
All members of a group are responsible for all group's work. In any assessment every student should honestly disclose any help received or sources used. In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.