등가하중법을 이용한 접합날개의 기하 비선형 응답 구조최적설계Nonlinear Response Structural Optimization of a Joined-Wing Using Equivalent Loads
- Other Titles
- Nonlinear Response Structural Optimization of a Joined-Wing Using Equivalent Loads
- Authors
- 김용일; 박경진
- Issue Date
- Apr-2007
- Publisher
- 한국전산구조공학회
- Citation
- 한국전산구조공학회 학술대회 논문집, pp.321 - 326
- Journal Title
- 한국전산구조공학회 학술대회 논문집
- Start Page
- 321
- End Page
- 326
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/43775
- Abstract
- The joined-wing is a new concept of the airplane wing. The fore-wing and the aft-wing arc joined together in the joined-wing. The range and loiter are longer than those of a conventional wing. The joined-wing can lead to increased aerodynamic performances and reduction of the structural weight. The structural behavior of the joined-wing has a high geometric nonlinearity according to the external loads. The gust loads are the most critical loading conditions in the structural design of the joined-wing. The nonlinear behavior should be considered in the optimization of the joined-wing. It is well known that conventional nonlinear response optimization is extremely expensive: therefore, the conventional method is almost impossible to use in large scale structures such as the joined-wing. In this research, geometric nonlinear response structural optimization is carried out using equivalent loads. Equivalent loads are the load sets which generate the same response field in linear analysis as that from nonlinear analysis. In the equivalent loads method, the external loads are transformed to the equivalent loads ; for linear static analysis, and linear response optimization is carried out based on the EL.
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