MECA0525: Performance and Dynamics of Vehicle

Course description and commitments :

• MECA0525-1: 5 ECTS

Organization and Exams

• TTHE FIRST COURSE WILL TAKE PLACE ON FEBRUARY 8, 2022, 13:45 IN ROOM 0/523 INSTITUTE OF MECHANICS B52
• AGENDA OF THE ACADEMIC YEAR 2021-2022
• EXAMS : Agenda and room for exams of June 2022
• QUESTIONS D'EXAMEN: Liste des questions de théorie pour l'examen oral de juin 2022 (version finalisée du 18 mai 2022)

Lecture Notes

1. INTRODUCTION: Introduction, course objective
2. PERFORMANCE 1: Conventions. Longitudinal motion equations
3. PERFORMANCE 2: Engine and electric motor performance curves. Approximation procedures.
4. PERFORMANCE 3: Tractive forces
5. PERFORMANCE 4: Road resistance
6. PERFORMANCE 5: Performance criteria: top speed, max gredability, acceleration and elasticity
7. PERFORMANCE 6: Energy/ fuel consumptions and emissions. Standard driving cycles
8. PERFORMANCE 7: Braking equations, stopping distance, braking force distribution, wheel blocking
9. TYRE MECHANICS 1: Tractive and braking forces
10. TYRE MECHANICS 2: Lateral forces, combined operations
11. TYRE MECHANICS 3: Mathematical modelling using Pacejka magic formula
12. VEHICLE DYNAMICS 1: Steady state cornering
13. VEHICLE DYNAMICS 2: Steady state cornering: suspension effects
14. VEHICLE DYNAMICS 3: Dynamics stability
15. RIDE & COMFORT: Road roughness, body senstivity to vibrations, quarter car model
16. CRASH WORTHINESS: Introduction to collision mechanics

Podcast and Lifesize Recordings (2020 or 2021)

1. INTRODUCTION: Introduction, course objective
2. PERFORMANCE 1: Conventions. Longitudinal motion equations
3. PERFORMANCE 1: Exercices
4. PERFORMANCE 2: Part 1 Engine. Approximation procedures.
5. PERFORMANCE 2: Part 2 Electric traction motors
6. PERFORMANCE 2: Exercises Approximation of performance curves
7. PERFORMANCE 3: Tractive forces: Part 1/ Transmissions
8. PERFORMANCE 3: Tractive forces: Part 2/ Tractive and power at wheels
9. PERFORMANCE 4: Road resistance
10. PERFORMANCE 5: Performance criteria Part1/ Top speed, max gradeability,
11. PERFORMANCE 5: Performance criteria Part 2/ acceleration and elasticity
12. PERFORMANCE 5 : Exercise max speed, gradeability, acceleration
13. PERFORMANCE 6: Energy/ fuel consumptions and emissions. Standard driving cycles
14. PERFORMANCE 6: Exercises energy consumption
15. PERFORMANCE 7: Braking equations, stopping distance, braking force distribution, wheel blocking
16. TYRE MECHANICS 1: Tyre construction
17. TYRE MECHANICS 1: Rolling resistance
18. TYRE MECHANICS 1: Tractive and braking forces
19. TYRE MECHANICS 2: Lateral forces: side slip
20. TYPE MECHANICS 2: Lateral forces: camber trust
21. TYRE MECHANICS 2: Combined operations
22. TYPE MECHANICS 3: Mathematical modlling using Pacejka magic formula
23. VEHICLE DYNAMICS 1: Steady state cornering: Low speed
24. VEHICLE DYNAMICS 1: Steady state cornering: High Speed
25. VEHICLE DYNAMICS 2: Steady state cornering: suspension effects: roll behaviour
26. VEHICLE DYNAMICS 2: Steady state cornering: suspension effects: camber, roll steer and compliance steer
27. VEHICLE DYNAMICS 3: Dynamics stability
28. RIDE & COMFORT: Road roughness, Tire/wheel excitation, body senstivity to vibrations,
29. RIDE & COMFORT : quarter car model, pitch /bounce model (not available)
30. CRASH WORTHINESS: introduction to collision mechanics

Syllabus

• SYLLABUS Syllabus Mai 2019

Exercise sessions

1. LONGITUDINAL EQUILIBRIUM
2. APPROXIMATION OF ENGINE CHARACTERISTICS
3. ROAD RESISTANCE AND TRACTIVE FORCES
4. MAX SPEED AND ACCELERATION
5. ENERGY CONSUMPTION
6. TYRE MECHANICS
7. STEADY STATE CORNERING
8. STEADY STATE CORNERING : INFLUENCE OF SUSPENSION EFFECTS
9. VEHICLE STABLITY DYNAMICS
10. RIDE AND COMFORT

Homework and computer exercises

• Homework 1: Performance estimation
• Homework 2: Energy consumption
  • HW2 Annex 1: NEDC Urban
  • HW2 Annex 2 : NEDC Extra Urban
  • HW2: EU-ECE-Reglement 101 Annexe 7 --> Defintion of NEDC
  • HW2: NEDC excell file
• Homework 3: Vehicle dynamics: steady state cornering
• Homework 4: Vehicle dynamics: steady state dynamics accounting for roll, camber and compliance
• Homework 5: Ride and road holding

Laboratory

• CHASSIS DYNAMOMETER Laboratory description

Additional ressources

• AIDE MATLAB : Document de présentation et d'initiation à MATLAB
• REDACTION DE RAPPORTS : Aide à la rédaction de rapports