MATERIALS & STRUCTURES

General Data
Academic program	General Engineering Program			:
Type d'EC	Classes
Lectures : 8h00 Tutorials : 16h00 Lab Work : 8h00 Project : 32h00 Total duration : 64h00	Status :	Period : SEMESTER 9	Education language : French/English

Learning Outcomes
The study of approaches used in design offices/R&D, the application of the tools covered in years 3 and 4 on concrete projects (methods, CAD-PLM, finite elements, etc)

Content
Course : The course comprises several independent parts: - Car-suspensions & axles - Suspensions: Roles - Calculation of the vehicle's Eigen frequencies using plane models - Balance between the front and back suspensions - Choice of stiffness. - Review of static load strength calculations: Isostatic and hyperstatic systems - Choice of types of connectors – Consideration of clearances and connectors stiffness. - Materials Strength concepts reviewed: Stress calculations – Concept of yield strength - Optimal sizing corresponding to the choice of material - Mass reduction. - Finite Element Method reviewed - Screw-assemblies: Quality class of bolts - Fatigue resistance - Rigidity of on assembly - Minimum starting load coefficient - Best practices - Failure analysis: Case study - Analysis of failures of suspension components.Project : Students are divided into four groups and are responsible for the sizing and design of a vehicle axle in accordance with the established specifications (external dimensions, kinematics, loads applied, maximum weight, etc.).

Content

Course : The course comprises several independent parts:
- Car-suspensions & axles
- Suspensions:
Roles - Calculation of the vehicle's Eigen frequencies using plane models - Balance between the front and back suspensions - Choice of stiffness.
- Review of static load strength calculations:
Isostatic and hyperstatic systems - Choice of types of connectors – Consideration of clearances and connectors stiffness.
- Materials Strength concepts reviewed:
Stress calculations – Concept of yield strength - Optimal sizing corresponding to the choice of material - Mass reduction.
- Finite Element Method reviewed
- Screw-assemblies:
Quality class of bolts - Fatigue resistance - Rigidity of on assembly - Minimum starting load coefficient - Best practices
- Failure analysis: Case study - Analysis of failures of suspension components.Project : Students are divided into four groups and are responsible for the sizing and design of a vehicle axle in accordance with the established specifications (external dimensions, kinematics, loads applied, maximum weight, etc.).

Pre-requisites / co-requisites
Non-exhaustive list, but primarily: 3rd and 4th year mechanical engineering classes, RDM, mechanical design, CAD (software ProEngineer and Winchill), FEM (ANSYS), 3rd and 4th year materials science classes

Bibliography
None

Assessment(s)
N°	Nature	Coefficient	Observable objectives
1	Oral defense of the first step of the project.	0,25	Oral report
2	Oral defense of the second and final step of the project.	0.25	Oral report
3	Assessment of the written report.	0.5	Project