Vehicle Dynamics in EV — Lesson 1

This lesson covers the fundamentals of vehicle dynamics modeling and simulation, with a focus on electric vehicles. It delves into the forces acting on a vehicle, including gravitational force, air friction, and tire resistance, and how these forces influence the vehicle's motion. The lesson also explains the concept of tractive effort, which is the force required to move a vehicle. It further discusses the importance of vehicle dynamics in the design process of electric vehicles, highlighting the need for system-level and component-level design. The lesson also touches on the impact of vehicle speed, wind velocity, and road conditions on the power and energy requirements of a vehicle.

Video Highlights

01:42 - Importance of vehicle dynamics in vehicle design
02:16 - System-Level vs Component-Level Design
04:40 - Vehicle Dynamics Modeling Process
12:39 - Impact of Speed, Wind, & Road Conditions on Power & Energy Requirements
33:59 - Rolling Resistance Force
48:13 - Gradient or Hill Climbing Force
51:55 - Force required for Linear Acceleration

Key Takeaways

- Vehicle dynamics is a crucial aspect of vehicle design, particularly for electric vehicles.
- Various forces act on a vehicle, including gravitational force, air friction, and tire resistance, which influence the vehicle's motion.
- Tractive effort is the force required to move a vehicle and is influenced by factors such as vehicle speed, wind velocity, and road conditions.
- Vehicle design can significantly impact the aerodynamic drag, which in turn affects the vehicle's power and energy requirements.
- Understanding the forces acting on a vehicle and how they interact is essential for optimizing the performance and efficiency of electric vehicles.