Advanced mechanisms for extreme environments
Summary
This course presents advanced mechanical engineering concepts through concrete examples of precision mechanisms. These mechanisms operate in extreme environments, whether in space or on earth. Theoretical concepts are covered in depth, as well as environmental constraints.
Content
- Introduction
- Application fields and examples (aerospace, astrophysics, metrology, medical instrumentation, watchmaking, robotics, MEMS)
- Operating environments and associated constraints (vacuum, cryogenics, high temperature, vibrations, microgravity, ionizing radiation, magnetic fields, sterilization, in vivo)
- Design (structural calculations, geometric models, optimization, choice of materials, sizing, choice of commercial components)
- Simulation (kinematic analysis, static FEA, modal FEA and buckling FEA, random vibrations, numerical ODE resolution)
- Dynamic aspects (damping, eigenfrequencies, balancing)
- System aspects (sensors, actuators, control)
- Manufacturing, assembly and integration of high precision mechanisms
- Characterization and testing (functional, lifetime, thermal, environmental)
- (Ultra-) High precision (perturbation sources, measurement instruments, calibration procedure)
- Synthesis examples from existing applications
Keywords
Precision mechanisms, Extreme environments, Dynamic systems, Finite Element Analysis, Space and terrestrial applications, Watchmaking, Scientific engineering, Vacuum, Cryogenics, Vibrations, Microgravity
Learning Prerequisites
Required courses
Conception de mécanismes I et II, Physique générale
Important concepts to start the course
This multidisciplinary course is based on the notions of physics and engineering acquired during the bachelor cycle.
Learning Outcomes
By the end of the course, the student must be able to:
- Formulate functional and environmental requirements based on established specifications.
- Design high-precision mechanisms compatible with the constraints (material compatible with vacuum/radiation, thermal effects, magnetic effect, shocks, vibrations, wear, degassing, emission of particles, etc.) relating to the operating environments.
- Identify the analyzes required in order to carry out the critical sizing of a mechanism.
- Predict the performances of a given mechanism and develop experimental protocols to validate them experimentally.
- Assess / Evaluate the life duration of a mechanism, establish maintenance and dismantling procedures.
Transversal skills
- Use a work methodology appropriate to the task.
- Communicate effectively with professionals from other disciplines.
Teaching methods
Note that the teaching is given in French, but lectures notes are in English, as both master's and bachelor's students can follow the course.
Ex-cathedra course consolidated by exercices.
Assessment methods
Mid-semester written exam (30%) and final written exam (70%) during the exam session.
In the programs
- Semester: Spring
- Exam form: Oral (summer session)
- Subject examined: Advanced mechanisms for extreme environments
- Lecture: 2 Hour(s) per week x 14 weeks
- Exercises: 1 Hour(s) per week x 14 weeks
- Semester: Spring
- Exam form: Oral (summer session)
- Subject examined: Advanced mechanisms for extreme environments
- Lecture: 2 Hour(s) per week x 14 weeks
- Exercises: 1 Hour(s) per week x 14 weeks
- Semester: Spring
- Exam form: Oral (summer session)
- Subject examined: Advanced mechanisms for extreme environments
- Lecture: 2 Hour(s) per week x 14 weeks
- Exercises: 1 Hour(s) per week x 14 weeks
- Semester: Spring
- Exam form: Oral (summer session)
- Subject examined: Advanced mechanisms for extreme environments
- Lecture: 2 Hour(s) per week x 14 weeks
- Exercises: 1 Hour(s) per week x 14 weeks
- Semester: Spring
- Exam form: Oral (summer session)
- Subject examined: Advanced mechanisms for extreme environments
- Lecture: 2 Hour(s) per week x 14 weeks
- Exercises: 1 Hour(s) per week x 14 weeks
Reference week
Mo | Tu | We | Th | Fr | |
8-9 | |||||
9-10 | |||||
10-11 | |||||
11-12 | |||||
12-13 | |||||
13-14 | |||||
14-15 | |||||
15-16 | |||||
16-17 | |||||
17-18 | |||||
18-19 | |||||
19-20 | |||||
20-21 | |||||
21-22 |
Légendes:
Lecture
Exercise, TP
Project, other