Innovative Local-Global Methods for Aircraft Structural Design
Abstract
Global-local design of large structures presents a great challenge to structural designers to coordinate the optimization of major structural components (wing or fuselage) with optimization of individual panel details. Moreover, the continuity of the adjacent designs in terms of their geometric and material variables presents a serious manufacturing difficulty for the large structure. The research developed methodology, computational infrastructure and algorithms with sound theoretical basis to extend industrial ad hoc approaches to the global-local design and blending of local designs. We proposed a two-level optimization approach employing genetic algorithms tailored to panel design on the lower level. Genetic algorithms involving both continuous and discrete design variables were developed for the design of composite structures. Response surface approximations to optimized panel failure loads are then used for the upper level wing or fuselage optimization. In addition, metrics for measuring continuity between adjacent panels were developed and incorporated in the optimization procedure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2002
- Accession Number
- ADA408847
Entities
People
- Rafael Haftka
Organizations
- University of Florida