A Physical Analytical Model to Study the Elasto-Kinematic Behaviour of a MacPherson Suspension

摘要: This paper describes a physical analytical model able to characterize the elasto-kinematic behaviour of MacPherson suspension for automotive applications. The presented allows determine position and orientation wheel upright as function generalized three-dimensional loads applied center tire-road contact patch, consequently variation characteristic parameters main interest: base, track, camber toe. All steps carried out build are described, starting from kinematic analysis, ongoing with static finally ones, describing how compliance has been taken into account in equilibrium conditions. analyses have validated by comparing results ones multibody model. In order obtain desired curves it is possible act both on geometry suspension, stiffness bushings arms, which cause compliance, modifying positions various elements ultimately hub. By means proposed rapidly evaluate effects these variations. Numerical examples relative front axle vehicle presented.