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Multi-Objective Optimization of Flexible Wing using Multidisciplinary Design Optimization System of Aero-Non Linear Structure Interaction based on Support Vector Regression

Support Vector Regression 기반 공력-비선형 구조해석 연계시스템을 이용한 유연날개 다목적 최적화

  • Choi, Won (Poongsan Defense R&D Institute) ;
  • Park, Chan-Woo (Department of Aerospace Engineering, Gyeongsang National University) ;
  • Jung, Sung-Ki (Engineering Center, Modeling and Applied Social Sciences Federal University of ABC) ;
  • Park, Hyun-Bum (Division of Defence Science & Technology, Howon University)
  • Received : 2014.06.11
  • Accepted : 2015.04.27
  • Published : 2015.07.01

Abstract

The static aeroelastic analysis and optimization of flexible wings are conducted for steady state conditions while both aerodynamic and structural parameters can be used as optimization variables. The system of multidisciplinary design optimization as a robust methodology to couple commercial codes for a static aeroelastic optimization purpose to yield a convenient adaptation to engineering applications is developed. Aspect ratio, taper ratio, sweepback angle are chosen as optimization variables and the skin thickness of the wing. The real-coded adaptive range multi-objective genetic algorithm code, which represents the global multi-objective optimization algorithm, was used to control the optimization process. The support vector regression(SVR) is applied for optimization, in order to reduce the time of computation. For this multi-objective design optimization problem, numerical results show that several useful Pareto optimal designs exist for the flexible wing.

유연날개의 공력 및 구조 설계값을 설계 변수로 하여 정적 상태에서의 정적 공탄성해석 및 최적화를 수행하였다. 정적 공탄성해석과 최적화를 위해 상용 해석소프트웨어들이 연계된 강건한 다분야 최적설계 시스템을 개발하였다. 최적화 설계변수로는 가로세로비, 테이퍼비, 후퇴각과 날개 위아래 스킨 두께를 설정하였다. 전역적 다목적 최적화를 위해 실수기반 적응영역 다목적 유전자 알고리즘을 적용하였으며 계산시간을 줄이기 위해 메타모델로 서포트벡터회귀 기법을 적용하였다. 유연날개에 대한 파레토 결과 분석을 통해 최대 항속시간과 최소 중량에 대한 최적 결과를 확인하였다.

Keywords

References

  1. John N. Porter, Duane Stevens, Kevin Roe, Sheldon Kono, David Kress, Eric Lau, "Wind environment in the Lee of Kauai Island, Hawaii during trade wind conditions: weather setting for the Helios Mishap", Journal of Boundary-Layer Meteorology, Volume 123, Issue 3, June 2007, pp.463-480. https://doi.org/10.1007/s10546-007-9155-z
  2. Carlos E. S. Cesnik, Patrick J. Senatore, Weihua Su, Ella M. Atkins, "X-HALE: A Very Flexible UAV for Nonlinear Aeroelastic Tests", 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 12 - 15 April 2010, Orlando, Florida
  3. J.H Kim, S.O Jun, D.Y Hur, D.H Lee, 2011.1, "Simultaneous Aero-Structural Design of HALE Aircraft Wing using Multi-Objective Optimization", Journal of KSAS, Vol. 39, No. 1, pp.50-55.
  4. E.Y Kim, S.M Chang, D.H Lee, M.H Cho, 2012. 11, "An efficient method for fluid/structure interaction analysis considering nonlinear structural behavior", Journal of KSAS, Vol. 40, No. 11, pp.957-962.
  5. Hounjet M.H.L. and Meijer J.J, 1995, "Evaluation of elastomechanical and aerodynamic data transfer methods for non-planar configuration in computational aeroelastic analysis", National Aerospace Laboratory NLP, NLP-TP-95690 U.
  6. S. J. Kim, E. J. You, M. G. Jung, J. K. Kim, "Application of Support Vector Regression for Improving the Performance of the Emotion Prediction Model", Journal of Intelligence and Information Systems, vol.18, no.3, 2012. 9, pp.185-202 https://doi.org/10.13088/JIIS.2012.18.3.185
  7. J. H. Sim, J. W. Choi, "Indoor Environment Recognition of Mobile Robot Using SVR", Journal of the KIIEE, Vol.24, No.8, 2010. 8, pp.119-125
  8. S. K. Jung, G, H. Kim, "A Study on Real-Coded Adaptive Range Multi-Objective Genetic Algorithm for Airfoil Shape Design", Journal of KSAS, Vol. 41, No.7, 2013.7, 509-515
  9. Daisuke Sasaki,"ARMOGA : An efficient Multi-Objective Genetic Algorithm", Technical Report, 2005. 1
  10. S. Rajagopal and Ranjan Ganguli, "Multidisciplinary Design Optimization of Long Endurance Unmanned Aerial Vehicle Wing", CMES, Vol.1680, No.1, pp.1-34, 2012