Design for renewable energy systems - B

Recommended Prerequisites

The pre-requisites of this course are those corresponding to the application for the MSc course CMM.

Teaching Methods

Teaching methods of lectures aim at the global learning of the discipline. The lectures are supported in the literature and presentations, with the support of media. There is an opportunity to discuss the concepts and more difficult issues.

Learning Outcomes

The aim of this course is to introduce the methodologies of design using FEM and give students an understanding of the behaviour of steel structures used in renewable energy systems with special incidence in steel tubular towers for wind turbines. In addition other lattice towers and different types of concrete towers combination will be discussed The Eurocodes are used throughout the course to calculate the structural resistance. The course describes different part of the tower: foundation, instability phenomena which are limiting for the resistance of a tower, different types of connections, as well as load analysis and safety strategy based on partial safety factors, tower production and maintenance. Design concerning instability, assembling connections, foundations, design of details prone to fatigue load are based on theoretical models and design standards for win tower certification and Eurocodes.

Work Placement(s)

No

Syllabus

Design loads, including background of the approximation of external loads to design values of the cross-section forces, and resistance of the tower, including the foundation are main topics of the course. Basic theory of practical methods used to approximate cyclic loading is given. Assembling connections of the towers are considered focusing on design of bolts.

Elastic stability of circular cylindrical shell, considering axial load and combination of axial load and bending moment will be given. Post-buckling behaviour of a perfect and imperfect shell will analysed to understand background of the design rules. Finite element method is used to calculate resistance of the tower for axial force and combination of axial force and bending moment, and to estimate design force in the bolts of the flange connection (“unsymmetrical T-stub connection).

Assessment Methods

Continuous
Written examination: 50.0%
Assignments: 50.0%

Bibliography

A bibliografia será definida pelo responsável da unidade curricular. | To be defined by the responsible of the course unit.