Mechanical Systems Design

Recommended Prerequisites

Strength of Materials, Applied Mechanics I, Applied Mechanics II, Mechanic of Structures, Mechanical Behaviour of Materials, Introduction to Mechanical Design, Machine Elements

Teaching Methods

Classes are essentially oriented to the project work of the proposed mechanical system through concrete statements. Students are grouped into work teams consisting of two students. Therefore, the classes are tutorial based, where all groups of students are expected to have an active participation. A significant part of the work will have to be done outside of school time. During the realization of the project the teacher monitors the work through the clarification of doubts and guidance of the students.

Learning Outcomes

This discipline aims to give the student a global view of the mechanical design, integrating and applying the notions acquired in the different subjects of the course and to give an overview of the problems of the profession of mechanical design engineer. In this sense, students are asked to design a medium-complex mechanical system. It is intended that students dimension or select all components of the system, using analytical and numerical tools. At the end they must present a written report and a dossier of design and manufacturing drawings. The main skills to be acquired are:

- Design a medium complexity mechanical system;

- Use of modeling software, finite element analysis and selection / dimensioning of mechanical transmissions;

- Use of design codes and international standards for materials and products;

- Ability to work in a team;

- Communicate a project: written report and oral presentation.

Work Placement(s)

No

Syllabus

A total or partial design work on mechanical systems is carried out (for example: lifting and transport equipment, vehicles, machine tools, equipment for agriculture and forestry, special purpose equipment, etc.), some of which are suggested by industry or other entities. At the beginning, statements of the work to be developed are presented, identifying the function of the equipment and its main technical characteristics. The student begins by reviewing the state of the art by integrating information from manufacturers, technical and scientific articles, and patents. Within the scope of the project, it will be necessary to dimension / select the mechanical, structural and other components, such as electric actuators. At the end, a written report of the descriptive and justification type is produced, and a dossier with the assembly, manufacturing drawings and parts and materials lists.

Head Lecturer(s)

José Domingos Moreira da Costa

Assessment Methods

Assessment
Project: 100.0%

Bibliography

A consulta de bibliografia necessária à realização do projeto faz-se através de diversas fontes: livros, normas, patentes, catálogos e revistas científicas. A bibliografia de referência é a seguinte:

- C.M. Branco, J.A.M. Ferreira, J.D.M. Costa e A. Ribeiro “Projecto de Orgãos de Máquinas”, 3ª Ed. Fundação C. Gulbenkian, 2008.

- FEM, Rules for the design of hoisting appliances (8 booklets – 1998)

- EN 1993-1-1:2005, Eurocode 3, Design of Steel Structures; Part 1-1 – General Rules and Rules for Buildings, 2005.

- EN 1993-1-9:2005, Eurocode 3: Design of steel structures - Part 1-9: Fatigue, 2005

- G. E. Dieter, Linda C. Schmidt, Engineering Design, McGraw-Hill International Editions, New York, 2013.

- J.E. Shigley, C.R. Mischke, R.G. Budynas, Projeto de engenharia mecânica, 7ª ed. - Porto Alegre: Bookman, 2005.

- G. Henriot, Traité Théorique et Pratique des Engrenages, 6ª ed, 1979. 

- G. Niemann, Elementos de Máquinas, Editora Edgard Blucher Lda, São Paulo, Brazil, 2000.