Author:
Dababneh Odeh,Kayran Altan
Abstract
Purpose
– In modeling an aircraft wing, structural idealizations are often employed in hand calculations to simplify the structural analysis. In real applications of structural design, analysis and optimization, finite element methods are used because of the complexity of the geometry, combined and complex loading conditions. The purpose of this paper is to give a comprehensive study on the effect of using different structural idealizations on the design, analysis and optimization of thin walled semi-monocoque wing structures in the preliminary design phase.
Design/methodology/approach
– In the design part of the paper, wing structures are designed by employing two different structural idealizations that are typically used in the preliminary design phase. In the structural analysis part, finite element analysis of one of the designed wing configurations is performed using six different one and two dimensional finite element pairs which are typically used to model the sub-elements of semi-monocoque wing structures. Finally in the optimization part, wing structure is optimized for minimum weight by using finite element models which have the same six different finite element pairs used in the analysis phase.
Findings
– Based on the results presented in the paper, it is concluded that with the simplified methods, preliminary sizing of the wing configurations can be performed with enough confidence as long as the simplified method based designs are also optimized iteratively, which is what is practiced in the design phase of this study.
Originality/value
– This research aims at investigating the effect of using different one and two dimensional element pairs on the final analyzed and optimized configurations of the wing structure, and conclusions are inferred with regard to the sensitivity of the optimized wing configurations with respect to the choice of different element types in the finite element model.
Subject
Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering
Reference14 articles.
1. Bruhn, E.F.
(1973), Analysis and Design of Flight Vehicle Structures, Tri-State Offset Company.
2. Butler, R.
(1998), “The optimization of wing structures”, Aircraft Engineering and Aerospace Technology, Vol. 70 No. 1, pp. 4-8.
3. ESDU 95010
(1995), “Computer program for estimation of span-wise loading of wings with camber and twist in subsonic attached flow”, available at: www.esdu.com
4. FAA Federal Aviation Regulations (FARS, CFR 14)
, “FARS PART 23 Appendix A, A.23.1 General”, available at: www.flightsimaviation.com/data/FARS/part_23-appA.html
5. Howe, D.
(2004), Aircraft Loading and Structural Layout, AIAA Publication, VA.
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献