Multidisciplinary optimization of CTBA using generalized durability/strength simulation process

Design Requirements
  • Maximize weld life
  • Maximize body life
  • Minimize weight
  • Satisfy natural frequency conditions
Design Problem Formulation
  • Design variables  (8)
    Length, thickness, position variables
  • Objective (2)
    Maximize weld life
    Maximize body life
  • Constraints (4)
    Mass upper limit
    Natural frequency condition
    Weld life lower limit
    Body life lower limit
Simulation and Design Software
  • Simulation : Generalized durability/strength simulation process
  • Design : PIAnO
Design Optimization Process
  1. Establish automation and perform DOE
  2. Generate metamodel using DOE samples
  3. Perform approximate optimization
Optimization Result
  • (If mass is maintained)
    Weld life and body life increased by 7% and 162%, respectively, while satisfying all constraints
  • (If mass is increased by 5%)
    Weld life and body life increased by 21% and 360%, respectively, while satisfying all constraints
  • (If mass is increased by 10%)
    Weld life and body life increased by 33% and 447%, respectively, while satisfying all constraints