Teaching Methodologies
· In theoretical classes, topics corresponding to the syllabus of the discipline are presented and
developed in order to promote the continuous participation and discussion of the subjects with the
students, stimulating their critical analysis.
· Theoretical-practical classes are essentially oriented towards concepts’ application in order to solve
real problems. In these classes it is sought that the student have an active participation by suggesting
alternative strategies to solving the proposed problems, thus increasing their skills in the design and
selection of machine elements that make up the majority of mechanical and electromechanical
equipment.
Learning Results
It is intended that students acquire fundamental knowledge for the design and/or selection of machine
elements. For that, after introduction, concepts, procedures and calculation methodologies involved in the
selection and dimensioning of machine parts and structural elements are taught. At the end of this course
unit, it is expected that students be able to apply the main concepts of static design and fatigue design.
Program
1. Introduction to the design of mechanical elements.
General characteristics of mechanical transmissions. Transmission selection factors.
2. Flexible mechanical transmissions.
3. Belt transmissions.
Types of belts: flat, trapezoidal and toothed. Specific applications. Comparative analysis of
different types of belts. Dynamic study.
4. Transmission by chains. Kinematic analysis. Transmission selection. Dynamic study.
5. Rigid mechanical transmissions: gears. Gear kinematics. Efforts on the teeth. Efforts on axles and supports. Dynamic study.
Dimensioning according to ISO standards.
6. Veins. Introduction. Shaft sizing according to the ASME code.
7. Fatigue. Phenomenological laws of fatigue behavior. Finite and infinite life. Fatigue tests. Fatigue resistance limit. Dimensioning of fatigue
axes.
8. Bearings. Selection of the type and dimensions of a bearing.
Internship(s)
NAO
Bibliography
[1] MALÇA, C. (2022). Órgãos de Máquinas – Diapositivos de apoio às Aulas Teóricas da unidade curricular.
ISEC (disponível na plataforma académica InforEstudante)
[2] MALÇA, C. (2022). Órgãos de Máquinas – Diapositivos de apoio às Aulas Teóricas-Práticas da unidade
curricular. ISEC (disponível na plataforma académica InforEstudante)
[3] BRANCO,C.M., FERREIRA, M., COSTA, J., RIBEIRO, A. (2005), Projecto de Órgãos de Máquinas, Lisboa: F.C.
Gulbenkian, (disponível na Biblioteca do ISEC)
[4] J SHIGLEY, E. (1977), Mechanical Engineering Design, Tokyo: McGraw-Hill Kogakusha, (disponível na
Biblioteca do ISEC)
[5] J BUDYNAS, R.G., NISBETT, J.K. (2008), Shigley’s mechanical engineering design, Singapore: McGraw-Hill,
(disponível na Biblioteca do ISEC)
[6] BRANCO, C.M. (1998), Mecânica dos Materiais, Lisboa: F.C. Gulbenkian, (disponível na Biblioteca do ISEC)