2023
Components of mechanical systems
Name: Components of mechanical systems
Code: EME13150M
6 ECTS
Duration: 15 weeks/156 hours
Scientific Area:
Mechanical Engineering
Teaching languages: Portuguese
Languages of tutoring support: Portuguese
Regime de Frequência: Presencial
Sustainable Development Goals
Learning Goals
Develop the students abilities to integrate theoretical analysis tools with the knowledge built in construction codes, standards, legislation and component supplier catalogs. Provide preparation for the design of components and mechanical equipment.
When completing the course unit successfully the student should have developed the following knowledge and skills:
Write the equilibrium equations of 2D and 3D structures.
Determine the connection forces between members of statically, determinate and indeterminate, structures and mechanisms.
Understand the different failure modes of a component, and know how to apply a failure criteria.
Dimension a component for sustaining static and fatigue loads.
Understand the working principles of standardized components and know how to select them for each application.
Design a mechanical equipment.
Be responsible and have independence in the study of new subjects.
When completing the course unit successfully the student should have developed the following knowledge and skills:
Write the equilibrium equations of 2D and 3D structures.
Determine the connection forces between members of statically, determinate and indeterminate, structures and mechanisms.
Understand the different failure modes of a component, and know how to apply a failure criteria.
Dimension a component for sustaining static and fatigue loads.
Understand the working principles of standardized components and know how to select them for each application.
Design a mechanical equipment.
Be responsible and have independence in the study of new subjects.
Contents
Recap of Mechanics.
Introduction to the Mechanics of continuous media. Analysis of motion, deformation measures. The principles of mass conservation, linear momentum and angular momentum. The concept of stress. Constitutive laws for linear elastic solids.
Introduction to design and its phases. Cost, responsibility, standards and demanded construction codes.
Safety factor and reliability.
The materials mechanical behavior. Material tests. Stress intensity factor. Ductile and fragile behaviour.
Design for static loads.
Fatigue design.
Design of structural bolted, welded and bonded connections.
Mechanical transmission systems. Design concepts for gear, trains, chain and cable transmissions. Clutches and brakes. Shaft connection mechanisms. Design of rolling contact and friction bearing supports.
Spring design for static and fatigue loads.
Introduction to Microelectromechanical Systems (MEMS). Development of miniaturized machines and sensor mechanisms.
Introduction to the Mechanics of continuous media. Analysis of motion, deformation measures. The principles of mass conservation, linear momentum and angular momentum. The concept of stress. Constitutive laws for linear elastic solids.
Introduction to design and its phases. Cost, responsibility, standards and demanded construction codes.
Safety factor and reliability.
The materials mechanical behavior. Material tests. Stress intensity factor. Ductile and fragile behaviour.
Design for static loads.
Fatigue design.
Design of structural bolted, welded and bonded connections.
Mechanical transmission systems. Design concepts for gear, trains, chain and cable transmissions. Clutches and brakes. Shaft connection mechanisms. Design of rolling contact and friction bearing supports.
Spring design for static and fatigue loads.
Introduction to Microelectromechanical Systems (MEMS). Development of miniaturized machines and sensor mechanisms.
Teaching Methods
The classes present and explain the course contents, following that with the solution of an example. The student must complement and deepen the classes with study and assignments, from the cited references, scientific papers and manufacturers catalogues. Some parts of the topics may be left as self study.
The student is responsible for reading and also for finding references, motivating in this way the development of his independence in acquiring new information.
The resolution of the assignments proposed during the semester is discussed, especially the project. The objective is to transmit the students how to solve the eventual mistakes made, or how to improve their work.
The students assessment consists of a final exam (40% of the grade), assignment on the dimensioning of a transmission system (15%), homework exercises (20%) and a mandatory final project assignment on a system design (25%).
The student is responsible for reading and also for finding references, motivating in this way the development of his independence in acquiring new information.
The resolution of the assignments proposed during the semester is discussed, especially the project. The objective is to transmit the students how to solve the eventual mistakes made, or how to improve their work.
The students assessment consists of a final exam (40% of the grade), assignment on the dimensioning of a transmission system (15%), homework exercises (20%) and a mandatory final project assignment on a system design (25%).
Teaching Staff
- Gonçalo Nuno Guerreiro de Jesus Silva [responsible]
