VD (B-TECH automobile engineering 6th)

Introduction

Single degree of freedom, two degree of freedom, free, forced and damped vibrations modeling and simulation

studies, model of an automobile, magnification factor, transmissibility, vibration absorber.

Multi Degree Freedom Systems

Closed and coupled far system, orthogonality of mode shapes, modal analysis.

Stability Of Vehicles

Load distribution, stability on a curved track slope and a banked road, calculation of tractive effort and reactions

for different drives.

Suspension Tyres And Vehicles Handling

Requirements, sprung mass frequency, wheel hop, wheel wobble, wheel shimmy, choice of suspension spring

rate, calculation of effective spring rate, vehicle suspension in fore and aft, roll axis and vehicle under the action

of side forces, tyre, dynamics, ride characteristics power consumed by a tyre. Oversteer, under steer, steady

state cornering, effect of braking, driving torques on steering, effect of camber, transient effects in cornering.

Numerical Methods

Approximate methods for determining fundamental frequency, Dunkerleys lower bound, Rayleighs upper bound,

Holzer method for closed coupled system and branched system.