| タイトル | An efficiency study of the simultaneous analysis and design of structures |
| 本文（外部サイト） | http://hdl.handle.net/2060/19950022399 |
| 著者（英） | Sobieski, Jaroslaw; Wu, Zhiqi; Striz, Alfred G. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1995-04-01 |
| 言語 | eng |
| 内容記述 | The efficiency of the Simultaneous Analysis and Design (SAND) approach in the minimum weight optimization of structural systems subject to strength and displacement constraints as well as size side constraints is investigated. SAND allows for an optimization to take place in one single operation as opposed to the more traditional and sequential Nested Analysis and Design (NAND) method, where analyses and optimizations alternate. Thus, SAND has the advantage that the stiffness matrix is never factored during the optimization retaining its original sparsity. One of SAND's disadvantages is the increase in the number of design variables and in the associated number of constraint gradient evaluations. If SAND is to be an acceptable player in the optimization field, it is essential to investigate the efficiency of the method and to present a possible cure for any inherent deficiencies. |
| NASA分類 | AIRCRAFT DESIGN, TESTING AND PERFORMANCE |
| レポートNO | 95N28820
NASA-TM-110168
NAS 1.15:110168 |
| 権利 | No Copyright |
