Design and numerical fatigue analysis of double horizontal directional suspension system

In this study, a double wishbone independent suspension has been designed for a TURKAR 4x4 vehicle. In this design the vehicle's wheelbase dimensions are unchanged, retaining the existing vehicle chassis form, instead of the solid axle, a double wishbone independent suspension has been made. Steering geometry, the direction of the position and length of the arms, camber, caster and toe in-out angles have been determined. Pol points were specified for this system made of solid modeling and using the finite element method the product was developed. In the second stage, force calculations were carried out for various conditions with respect to axle loads according to the current design. According to these forces joints have been designed, air spring and bearings were determined. Exposed to variable loading, fatigue analyses of the parts were made. Using infinite lifetime approach, improvements were made in critical areas. Mass and lifetime optimization was carried out. Design processes of parts are carried out with 3D modeling, performing FEA studies with ANSYS Workbench software. During the design of the systems, simplicity of production, safety of structure, ease of assembly and maintenance were of main concern