Automotive Front Lower Control Arm (A-Arm)

Create a realistic 3D CAD model of an **automotive front lower suspension control arm (A-arm / wishbone type)** for a passenger car, designed for finite element analysis (FEA) in ANSYS Workbench. **Geometry and features:** - Use a strong, lightweight, approximately triangular or wishbone-shaped arm. - Include two inner mounting bosses at the chassis side, spaced apart, each with a cylindrical through-hole for a rubber bushing or mounting bolt. - Include one outer ball-joint mounting boss at the wheel side, with a circular through-hole for the ball-joint stud. - Connect the two inner mounting bosses to the outer boss using two smoothly curved structural arms, forming a clear A-shaped or V-shaped profile. - Use a hollow or ribbed structural design with realistic wall thickness and smooth transitions. - Add rounded fillets at the junctions between the arms and mounting bosses to reduce stress concentration. - Keep the mounting holes open and unobstructed. - Make the entire control arm a single solid body with watertight geometry and no disconnected parts. **Initial dimensions:** - Overall length: approximately 350 mm. - Overall width: approximately 250 mm. - Main arm wall thickness: 5 mm. - Mounting boss outer diameter: approximately 35–45 mm. - Mounting hole diameter: approximately 12–16 mm. - Outer ball-joint boss diameter: approximately 40–50 mm. - Fillet radius: approximately 5–8 mm. These are preliminary modelling dimensions for an academic project, not verified OEM specifications. Adapt the geometry as needed to maintain a manufacturable design. **Design requirements:** - Suitable for a passenger-car front suspension concept. - Appropriate for static structural analysis under vertical and braking loads. - Avoid unnecessary decorative details, threads, logos and tiny features. - Use millimetres as the modelling units. - Export the final model as STEP (.step or .stp), preferably AP214 or AP242. - Ensure the exported model imports into ANSYS as a valid solid body. **Deliverables:** 3D solid CAD model, STEP file and editable native CAD file if supported.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.