Aeroelastic response of composite helicopter rotor with random material properties

被引：0
|
作者：
Murugan, Senthil [1 ,2 ]
Ganguli, Ranjan [1 ,2 ,3 ]
Harursampath, Dineshkumar [1 ,2 ,3 ]
机构：
[1] Indian Institute of Science, Bangalore 560 012, India
[2] Department of Aerospace Engineering
[3] AIAA
来源：
Journal of Aircraft | 1600年 / 45卷 / 01期
关键词：
This study investigates the effect of uncertainty in composite material properties on the cross-sectional stiffness properties; natural frequencies; and aeroelastic responses of a composite helicopter rotor blade. The elastic moduli and Poisson's ratio of the composite material are considered as random variables with a coefficient of variation of around 4%; which was taken from published experimental work. An analytical box beam model is used for evaluating blade cross-sectional properties. Aeroelastic analysis based on finite elements in space and time is used to evaluate the helicopter rotor blade response in forward flight. The stochastic cross-sectional and aeroelastic analyses are carried out with Monte Carlo simulations. It is found that the blade cross-sectional stiffness matrix elements show a coefficient of variation of about 6 %. The nonrotating rotor blade natural frequencies show a coefficient of variation of around 3%. The impact of material uncertainty on rotating natural frequencies varies from that on nonrotating blade frequencies because of centrifugal stiffening. The propagation of material uncertainty into aeroelastic response causes large deviations; particularly in the higher-harmonic components that are critical for the accurate prediction of helicopter blade loads and vibration. The numerical results clearly show the need to consider randomness of composite material properties in the helicopter aeroelastic analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：306 / 322
相关论文
共 50 条
  • [31] AEROELASTIC OPTIMIZATION OF A HELICOPTER ROTOR USING AN EFFICIENT SENSITIVITY ANALYSIS
    LIM, JW
    CHOPRA, I
    JOURNAL OF AIRCRAFT, 1991, 28 (01): : 29 - 37
  • [32] Aeroelastic analysis of helicopter rotor blades on deformable chimera grids
    Pomin, H
    Wagner, S
    JOURNAL OF AIRCRAFT, 2004, 41 (03): : 577 - 584
  • [33] AUTOMATIC-GENERATION OF HELICOPTER ROTOR AEROELASTIC EQUATIONS OF MOTION
    GIBBONS, MP
    DONE, GTS
    VERTICA, 1984, 8 (03): : 229 - 241
  • [34] Aeroelastic optimization of a helicopter rotor to reduce vibration and dynamic stresses
    Ganguli, R
    Chopra, I
    JOURNAL OF AIRCRAFT, 1996, 33 (04): : 808 - 815
  • [35] Aeroelastic stability analysis of helicopter rotor blade with swept tips
    Yang, Wei-Dong
    Deng, Jing-Hui
    Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics, 2003, 35 (03): : 248 - 252
  • [36] ROTOR AEROELASTIC STABILITY COUPLED WITH HELICOPTER BODY MOTION.
    Miao, Wen-Liu
    Huber, Helmut B.
    1974,
  • [37] Effect of Uncertainty on Hub Vibration Response of Composite Helicopter Rotor Blades
    You, Young Hyun
    Jung, Sung Nam
    Pawar, Prashant A.
    Shin, Eui Sup
    JOURNAL OF AIRCRAFT, 2010, 47 (01): : 151 - 160
  • [38] A Novel Composite Helicopter Tail Rotor Blade with Enhanced Mechanical Properties
    Hadar, Anton
    Voicu, Andrei-Daniel
    Baciu, Florin
    Vlasceanu, Daniel
    Tudose, Daniela-Ioana
    Pastrama, Stefan-Dan
    AEROSPACE, 2023, 10 (07)
  • [39] AEROELASTIC EQUILIBRIUM OF HELICOPTER ROTOR WITH NON-LINEAR AERODYNAMIC FORCES
    COSTES, JJ
    RECHERCHE AEROSPATIALE, 1982, (05): : 335 - 352
  • [40] STATIC AEROELASTIC TWIST EFFECTS ON HELICOPTER ROTOR-INDUCED VELOCITY
    NAGARAJA, KS
    PIERCE, GA
    JOURNAL OF AIRCRAFT, 1977, 14 (02): : 217 - 219
12345