Dassault Aviation, Saint-Cloud, France

摘要

Consistent geometry manipulation of different models utilized in MDO system is one of the major issues for efficient design optimizations. In this paper, a physics-based free-form deformation method allowing a direct manipulation of the body is proposed for efficient geometry manipulation and parameterization in optimization processes. The developed method also achieves efficient mesh deformation preserving mesh quality. It has several advantages for the geometry parameterization such as easy handling of complex objects, direct manipulation, local controllability and intuitive deformation as real solid objects. In addition, it offers a straightforward solution for constructing hierarchical/adaptive parameterizations. Aerodynamic optimizations of a transonic airfoil showed that the developed method had superior abilities for efficient design optimizations.