Optimization Approach of Front Lower Wishbone Suspension Arm

Mechanical Engineering

Suspension systems have been widely applied to vehicles, from the horse-drawn carriage with flexible leaf springs fixed in the four corners, to the modern automobile with complex control algorithms. The suspension of a road vehicle is usually designed with two objectives to isolate the vehicle body from road irregularities and to maintain contact of the wheels with the roadway. The suspension link allows wheels to rise and fall on their own without affecting the opposite wheel. In this case, the wheels are either not connected at all or are connected through universal joints with a swing axle. Suspensions with other devices, such as anti-roll bar that link the wheels in some way are still classed as independent suspension link. Suspension arm is one of the main components in the suspension systems. Uneven tyre wear, suspension noise or misalignment, steering wheel shimmy or vibrations are the main causes of the failure of the lower suspension arm. Most of the cases the failures are catastrophic in nature. So, the structural integrity of the suspension arm is crucial from design point of view both in static and dynamic conditions. This paper presents design, modelling and analysis of car front suspension lower arm to study the stress condition and to select the suitable materials for the front suspension lower arm. The main objectives of this study to determine critical locations and strain distributions of the component. The paper aims to complete Finite Element Analysis of the front suspension lower arm which consist the stress optimization loadings and analysis for deformation..

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