Vehicle Dynamics (Dept Elec-I) (2170203)  

Syllabus

Sr. Topics Teaching Hours Module Weightage
1
Performance Characteristics of Vehicle:
SAE Vehicle axis system,Forces & moments affecting vehicle, Earth Fixed coordinate system,Dynamic axle loads, Equations of motion, transmission characteristics,vehicle performance, power limited and traction limited acceleration,braking performance, Brake proportioning, braking efficiency.
6
15 %
2
Aerodynamics:
Mechanics of Air Flow Around a Vehicle, Pressure Distribution on a Vehicle, Aerodynamic Forces, Drag Components,Aerodynamics Aids.
4
10 %
3
Tire Mechanics:
Tire Construction, Size and Load Rating, Terminology and Axis System, Tractive Properties, Cornering Properties, Camber Thrust, Aligning Moment, Combined Braking and Cornering, Conicity and Ply Steer, Slip, Skid, Rolling Resistance, Elastic Band Model for longitudinal slip, Simple model for lateral slip, Combined longitudinal/lateral slip (friction ellipse), Taut string model for lateral slip,Magic Tire Formula
7
15 %
4
Suspensions:
Suspension Kinematics, Suspension types, Solid Axles, Independent Suspensions, Anti-Squat and Anti-Pitch Suspension Geometry, Anti-Dive Suspension Geometry, Roll Center Analysis, Suspension Dynamics, Multi-body vibration, Body and Wheel hop modes, Invariant points,Controllable Suspension Elements: Active, Semi-Active. Choice ofsuspension spring rate, Calculation of effective spring rate, Vehicle suspension in fore and apt directions.
8
20 %
5
The Steering System:
The Steering Linkages, Steering System Forces and Moments, Steering System Models, Steering Geometry, Steady Handling (2 DOF steadystate model), Understeer and Oversteer, Effect of Tire Camber and Vehicle Roll (3 DOF steady-state model), Transient Handling and Directional Stability (2 DOF unsteady model), Effect of Vehicle Roll on Transient Handling (3 DOF unsteady model), Steady-State and Transient Handling of Articulated Vehicles.
8
20 %
6
Rollover:
Quasi-Static Rollover of a Rigid Vehicle, Quasi-Static Rollover of a Suspended Vehicle, Transient Rollover
4
10 %
7
Motorcycle Dynamics:
Kinematic structure of motorcycle, geometry of motorcycles, importance of trail, Resistance forces acting on motorcycle (tyre rolling resistance, aerodynamic resistance forces, resistant force caused by slope), Location & height of motor cycle’s centre of gravity (C.G), Moments of inertia on Motorcycle. Introduction to Front & Rear suspensions of Motorcycle.
5
10 %