Machine design

5.00 credits

30.0 h + 30.0 h

> Schedule

Teacher(s)

Havelange Yorick (compensates Simar Aude); Ronsse Renaud; Simar Aude;

Language

English
> French-friendly

Prerequisites

This course is taught in the first year of the master MECA and ELME mechatronics. It assumes that students already have basic skills in technical drawing. The aim of the course is to introduce the elementary knowledge necessary for the mechanical design of the elements that compose a machine. It is thus the basic course before a specialization 'design and manufacturing' and will contribute to prepare students to a future job as R&D engineer in the technical department of a company.

Main themes

Functional analysis of machines and their components
Properties of component
Elements of calculus of machine components.

Learning outcomes

At the end of this learning unit, the student is able to :

Specific learning outcomes of the course

Write functional specifications for a machine
Identify the functionalities of a machine (actuation, bearing systems, transmission, sealing, ')
Estimate the installed and maximum power, the energetic consumption and the efficiency of a machine
Design a simple machine following an adapted methodology
Identify the basic hypotheses of elements dimensioning
Dimensioning following various criteria (yield strength, elastic compliance, fatigue) of usual elements (e.g. shafts)
Dimensioning while taking into account the effect of dynamic loading, stress concentration and residual stresses
Choose machine components (bearing, gasket, transmission) Read and interpret the drawing of an existing machine
Hand drawing of machine components and overall drawings
Placing tolerances for a mechanical system
Machine component design : threaded fastener and power screws, rivet and welding rolling bearing, sliding bearings, clutches and brakes, power transmssion components (gears, belt, chains, etc..), shaft and assocated part (key, pin, coupling, ')

In consideration of the reference table AA of the program " Master's degree civil engineer mechanics ", this course contributes to the development, to the acquisition and to the evaluation of the following experiences of learning:

AA1.1, AA1.2
AA2.1, AA2.2, AA2.3, AA2.4, AA2.5, AA2.6, AA2.7, AA2.8
AA4.3, AA4.4
AA5.1

Content

At the end of the course the students will be able to :

Describe the functionalities of a machine (actuation, bearing systems, transmission, sealing, …). Write functional specifications for a machine and conduct a risk analysis.

Design a simple machine following an adapted methodology. Take into account of digital manufacturing technologies, environmental, social, and economic impacts from the initial phase of design through to the end of life (sustainable design)

Use the propose vocabulary for the various machine items.

Identify the basic hypothesis of elements dimensioning. Estimate the installed and maximum power, the energetic consumption and the efficiency of a machine.

Dimensioning following various criteria (static strength, elastic deformation, fatigue, …) of usual elements (e.g. shafts)

Choose machine components (bearing, gasket, transmission, brake, clutch, hydraulic, spring)

Read and interpret the drawing of an existing machine. Hand drawing machine elements and overall drawings. Placing tolerances for a mechanical system

Teaching methods

Part of the course is taught as lectures and by problem and project based learning (PBL) within groups of students. Two projects are proposed:

Project 1 : Design of a machine
Project 2: Rapid prototyping of the solution

Evaluation methods

Students will be evaluated based on the two projects and a written exam that includes exercises, theoretical questions, and at least one technical drawing to be completed.
The written exam assesses critical skills in sizing and technical drawing, which are essential for passing the course unit. Therefore, the weighting between the exam and the projects will be calculated as follows:

A score below 6/12 on the exam indicates insufficient mastery of these skills, justifying failure of the course unit. In this case, the exam score will be scaled to a 20-point scale and will constitute the final grade for the course.
If the exam is passed (with a score of at least 6/12), projects 1 and 2 will each count for 4 points toward the final grade. These projects constitute annual assessments, in accordance with Article 78 of the RGEE. They are not eligible for a make-up session.

For the exam, the reference book “Juvinall and Marshek” and a bearing catalog are permitted, while the technical drawing textbook is not permitted.
Language of assessment: English for project reports and presentations, and English or French for the written exam.

Other information

All practical information about the course and the resources is available on Moodle.

Bibliography

Suggested books (available at the BST library) :

Engineering Design Methods

N. Cross, ed. J. Wiley and Sons, 1991.
Materials Selection in Mechanical Design, M.F. Ashby, Butterworth-Heinemann.
This book is available on the web site of the BST library when connected to the UCL network, see:
http://www.sciencedirect.com/science/book/9781856176637
Aide Mémoire de l’ELEVE Dessinateur et du Dessinateur Industriel
M. Norbert et R. Philippe, La Capitelle, Casteilla, 1987.
Roulements FAG, roulements à billes, roulements à rouleaux, paliers, accessoires, catalogues WL 41 520 FA.
Mémotech, productique, conception et dessin, C. Barbier et R. Bourgeois, collection A. Capliez, Educative, ed. Casteilla, 1988.
Méthode Active de Dessin Technique, A Ricordeau, C. Corbet, C. Hazard, ed Casteilla (Ce livre est également obligatoire pour le cours LMECA_1210 et le cours de LFSA_1501).
Materials - Engineering, Science, Processing and Design, M. Ashby, H. Shercliff, D. Cebon, Butterworth-Heinemann.

Teaching materials

MECA1821 – Machine Design, Specifications and pilot study (ch 1 to 3), B. Raucent
Fundamentals of Machine Component Design R.C. Juvinall & K.M. Marshek, éd. J. Wiley and Sons
Engineering Design Methods N. Cross, ed. J. Wiley and Sons, 1991.
Méthode Active de Dessin Technique, A Ricordeau, C. Corbet, C. Hazard, ed Casteilla

Faculty or entity

> MECA

Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme

Sigle

Credits

Prerequisites

Learning outcomes

Master [120] in Mechanical Engineering

MECA2M

Master [120] in Electro-mechanical Engineering

ELME2M

Master [120] in Energy Engineering

NRGY2M