| Course label : | Modeling and sizing of mechanical systems |
|---|---|
| Teaching departement : | MSO / Structures, Mechanisms and Construction |
| Teaching manager : | Mister DENIS LE PICART |
| Education language : | French |
| Potential ects : | 4 |
| Results grid : | |
| Code and label (hp) : | G1G2_ED_MSO_MDS - Mod. et dimens. des syst. meca |
Education team
Teachers : Mister DENIS LE PICART / Madam MARIEM BHOURI / Madam PAULINE LECOMTE / Mister AHMED EL BARTALI / Mister PIERRE HOTTEBART / Mister XAVIER BOIDIN
External contributors (business, research, secondary education): various temporary teachers
Summary
Keywords: design office, mechanics, configuration, design, sizing The purpose of this course is to provide students with the tools and methodologies necessary for modeling and dimensioning mechanical systems. This course is therefore aimed at those who are interested in engineering professions in design offices and/or research and development engineers in the field of mechanics (automotive, aeronautics, aerospace, railways, etc.). This teaching will be guided throughout by the study of a real mechanical system that will allow the student to see the coherence and the link between the different mechanical disciplines covered. Through a problem of redesigning an existing mechanical system (a thin sheet metal nibbler), the student will have to evaluate the impact of a modification on the overall behaviour of this system and on the existing mechanical parts. The aim will be to determine whether a more powerful motor would allow 2mm thick sheets to be nibbled instead of 1.3mm thick. The analysis will therefore involve the acquisition of calculation tools to determine the new shear force required to cut the sheet metal. The student can then use a multibody dynamics calculation tool to determine the power of the new engine. Then he will be able to evaluate the impact of this modification on existing parts, in terms of: - simple part resistance (RdM) - held connections at contact pressure - gear resistance - new service life of ball bearings - resistance of complex parts (MMC - finite elements) Each session will be oriented towards "technology" with dismantling of the mechanical system, analysis of physical systems (bearings, gears...), use of computer resources Translated with www.DeepL.com/Translator (free version)
Educational goals
At the end of this course, students will understand the challenges of dimensioning and the role of the engineer in choosing a design methodology. They will address issues related to the work of an engineer in the Design Office and the work of a computational engineer. To do this, they will have to be able to: - Describe and interpret the design criteria for a mechanical system or structure (Level 2: Understanding) - Choose the criteria that meet a given set of specifications (level 4: Analysis) - Set up a mechanical system to determine its input-output laws (level 4: Analysis) - Apply a fundamental principle of dynamics to calculate the effects of acceleration phenomena (level 3: Application) - Use dimensioning techniques that meet static, kinematic and dynamic criteria in the case of mechanical systems and structures composed of about ten parts (level 3: Application) - Use a simple computer tool (e.g. RdM Le Mans; CATIA finite element module) to perform preliminary project sizing (level 3: Application) - Use a complex computer tool (e. g. LMS Virtual Labs) to perform calculations (level 3: Application). Contribution of the course to the competency framework; at the end of the course, the student will have progressed in: - Theme 2: Understanding complex problems o Adopt a global vision and understand the problem in its complexity ￜ Ability to understand and formulate the problem (hypotheses, orders of magnitude, etc.) o Model and organize the resolution ￜ Ability to recognize the specific elements of a problem ￜ Ability to identify interactions between elements ￜ Ability to propose one or more resolution scenarios ￜ Ability to take into account the uncertainty generated by complexity o Monitor the resolution ￜ Ability to converge towards an acceptable solution (follow-up hypotheses, orders of magnitude...) Translated with www.DeepL.com/Translator (free version)
Sustainable development goals
Knowledge control procedures
Continuous Assessment / Fixed Exam
Comments:
Online resources
Basic level course online prerequisites on ENT Exercise corrected online on the ENT Interactive self-assessment QCM
Pedagogy
Validation of the prerequisites by QCM This course is based on a study of the mechanical system that serves as a guideline. This mechanism will be analyzed, dismantled and modelled. Reverse Pedagogy: the student works on his course in TEA, the classroom with the teacher being a seminar of concrete applications using AO tools and analysis of real systems.
Sequencing / learning methods
| Number of hours - Lectures : | 2 |
|---|---|
| Number of hours - Tutorial : | 14 |
| Number of hours - Practical work : | 28 |
| Number of hours - Seminar : | 0 |
| Number of hours - Half-group seminar : | 0 |
| Number of student hours in TEA (Autonomous learning) : | 24 |
| Number of student hours in TNE (Non-supervised activities) : | 0 |
| Number of hours in CB (Fixed exams) : | 0 |
| Number of student hours in PER (Personal work) : | 0 |
| Number of hours - Projects : | 0 |
Prerequisites
- Notions on materials (density, Young's modulus, fish coefficient...) - Elementary connections between solids - Torsor concepts, stresses and deformations - Static balance of solids (fundamental principle of statics)
Maximum number of registrants
64