Steel Tube Space Frame Chassis

The chassis is the primary structural and safety system of the car, supporting all major subsystems while protecting the driver and meeting Formula SAE safety regulations.

Objectives:

  • Maximize stiffness-to-weight ratio
  • Increase clearance and rule compliance
  • Improve driver safety and ergonomics
Chassis Render
4130 Chromoly Steel
69 lbs
2185 Nm/deg

Finite Element Analysis

  • FEA used to analyze stiffness under torsional loading with displacement plots
  • Iterative geometry changes increased stiffness while reducing or maintaining weight
  • Peak stresses were identified with stress plots
FEA Results

Jig and Manufacturing

Precise manufacturing was achieved using a CNC MDF jig system and aluminum positioning blocks on a laser cut precision table.

Frame Welding
Manufacturing Jig