Enhanced Aircraft Design Capability for the Automated Structural Optimization System. Phase 1.
Abstract
This report documents the results of an STTR Phase 1 feasibility study to investigate potential enhancements to the 'Automated Structural Optimization System (ASTROS).' The scope of this feasibility study included (1) developing a robust design capability through probabilistic design optimization, (2) expanding the multidisciplinary optimization (MDO) capabilities of ASTROS, and (3) lining the three primary design stages, i.e., conceptual, preliminary, and detail design. A new method for reliability-based optimization was devised to account for modeling uncertainty in design optimization. Modeling uncertainty is quantified on the basis of ground vibration test and analysis data for generically similar structures. The new method yields the same degree of accuracy as existing methods for a small fraction of the cost. A framework for including manufacturing detail and manufacturing constraints in ASTROS was formulated. A genetic optimization algorithm for optimizing the layout and sizing of structural framing members was demonstrated, thereby helping to automate the interface between conceptual and preliminary design.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1996
- Accession Number
- ADA311908
Entities
People
- David L. Herendeen
- Douglas J. Neill
- Mark S. Ewing
- Timothy K. Hasselman
- Xiaoguang Chen