Shape optimization of a lower control arm

Design Requirements
  • Minimize weight
  • Satisfy rigidity requirements
  • Satisfy buckling strength requirements
  • Satisfy durability requirement
Design Problem Formulation
  • Design variables  (4)
    Shape variables
  • Objective (1)
    Minimize mass
  • Constraints (8)
    Rigidity requirements (2)
    Buckling strength requirements (2)
    Durability requirements (4)
Simulation and Design Software
  • Simulation : Abaqus, Hypermesh, Nastran
  • Design : PIAnO
Design Optimization Process
  1. Establish automation and perform DOE
  2. Generate metamodel using DOE samples
  3. Perform approximate optimization
Optimization Result
  • Mass reduced by approximately 3% while satisfying all constraints