Marine Technology 2 - Structures

The course comprises a review of the the structural configuration and behavior of ship hull girders, truss-work platforms and floating platforms. It gives an introduction to fundamental methods for static analysis of forces and stresses in beams, girders and frame structures, plastic analysis of ultimate strength, their resistance to buckling and application of these methods to analysis of relevant structural components

The subjects Marine Technology Basics, - Structures,- Hydrodynamics and - Machinery, shall together enable the students to describe and understand the basics of marine technology and carry out engineering tasks related to design, construction and operation of marine systems such as ships, other vehicles, offshore platforms and other marine systems. In addition they shall give the students a proper set of tools and methods for carrying out such work and training in the skills of communication and teamwork.

After completed course the students shall be capable to:

• Conduct calculations of global still water shear force and bending moment in the hull girder on the basis of hydrostatic data and load conditions
• Describe the structural configuration of the ship hull girder with emphasis on tankers
• Calculate the requirements to plate thickness and stiffener dimensions due to local loads
• Understand and describe the force transfer in the hull and the interaction between them the hull girder components
• Conduct simple calculations of the principal hull stresses and their combination
• Conduct hand calculations of statically indeterminate systems with the unit load method and the deformation method, as well as the program 3DBEAM.
• Describe how the solution with the deformation method can be systematized by means of matrix formulation
• By means of PYTHON develop a data program for analysis of statically indeterminate structures with the matrix method, and for this work prepare a structured technical report with detailed description of the program and rational evaluations of the results
• Determine ultimate strength by means of plastic methods of analysis and conduct simple checks of results obtained with computer software for nonlinear analysis of beams and frame structures
• Describe how elastic buckling of columns can be analyzed by using the differential equation, the stiffness matrix for a beam with axial force and energy methods.
• Calculate the critical load for relevant beam- column components in marine structures
• Describe the structural configuration and force transfer for a truss-work platform.
• Be able to identify critical design issues for novel types of marine structures (e.g. renewable energy facilities and autonomous vessels) and to go beyond rule-based design.

Lectures and exercises. Project work on structural analysis with the matrix method using PYTHON.