带后掠桨尖旋翼/螺旋桨的悬停气弹特性分析

doi:10.3969/j.issn.1004-132X.2024.02.001

摘要/Abstract

摘要： 针对旋翼/螺旋桨的大负扭和后掠桨尖设计在桨叶内部所带来的严重应力应变集中问题，结合三维结构动力学模型、旋翼气动模型和旋翼配平方法，对复合材料旋翼/螺旋桨进行了综合建模与气弹载荷分析，并通过悬停实验验证了综合模型的准确性。对比分析了无负扭、大负扭和大负扭带后掠桨尖的桨叶气弹特性，发现大负扭导致桨叶应力集中区域扩大，后掠桨尖使桨尖过渡区域的应力集中区域扩大，集中程度加剧。

关键词: 旋翼/螺旋桨, 复杂几何外形桨叶, 旋翼气弹耦合, 三维桨叶力学模型, 三维应力应变

Abstract: The issues of significant stress and strain concentration within the prop-rotor blades caused by large negative twist and swept tips were addressed herein. By 3D structural dynamics model, rotor aerodynamics model, and rotor trim methods, a comprehensive model of composite prop-rotor was developed, and the aeroelastic loads of composite prop-rotor were analyzed, and the accuracy of the synthesis model was validated through hover experiments. The analysis of aero-elastic characteristics was performed for rotor blades with zero twist, large negative twist, and large negative twist with swept tips. The results indicate that the large negative twist enlarges the stress concentration area, while the swept tip makes the stress concentration at the swept transition area larger and the degree of concentration worsens.

Key words: , prop-rotor, complicated geometry blade, rotor aero-structural coupling, 3D structural blade model, 3D strain and stress

中图分类号:

V214.1

黄薇, 池骋. 带后掠桨尖旋翼/螺旋桨的悬停气弹特性分析[J]. 中国机械工程, 2024, 35(02): 191-200.

HUANG Wei, CHI Cheng. Analysis for Aero -elastic Characteristics of Prop-Rotor in Hover with a Swept Tip[J]. China Mechanical Engineering, 2024, 35(02): 191-200.

参考文献

［1］LEISHMAN G J. Principles of Helicopter Aerodynamics［M］. New York：Cambridge University Press, 2006: 292-295.
［2］YEN J G. Effects of Blade Tip Shape on Dynamics, Cost, Weight, Aerodynamic Performance, and Aeroelastic Response［J］. Journal of the American Helicopter Society, 1994, 39(4): 37-45.
［3］虞志浩, 杨卫东, 张呈林. 基于Broyden法的旋翼多体系统气动弹性分析［J］. 航空学报, 2012, 33(12): 2171-2182.
YU Zhihao, YANG Weidong, ZHANG Chenglin. Aeroelasticity Analysis of Rotor Multibody System Based on Broyden Method［J］. ACTA Aeronauticaet Astronautica Sinica, 2012, 33(12): 2171-2182.
［4］SRINIVAS V, CHOPRA I, MARK W N. Aeroelastic Analysis of Advanced Geometry Tiltrotor Aircraft［J］. Journal of the American Helicopter Society, 1998, 43(3): 212-221.
［5］ZHAO Q J, GUO H X. A Study on Aerodynamic and Acoustic Characteristics of Advanced Tip-shape Rotors［J］. Journal of the American Helicopter Society, 2007, 52(3): 201-213.
［6］ACREE C W. Effects of V-22 Blade Modifications on Whirl Flutter and Loads［J］. Journal of the American Heli-copter Society, 2005, 50(3): 269-278.
［7］HOUBOLT J C, BROOKS G W. Differential Equations of Motion for Combined Flapwise Bending, Chordwise Bending, and Torsion of Twisted Nonuniform Rotor Blades［R］. NASA, TR-1346, 1957.
［8］HODGES D H, DOWELL E H. Nonlinear Equations of Motion for the Elastic Bending and Torsion of TwistedNonuniform Rotor Blades［R］. NASA, TN-D-7818, 1974.
［9］CHOPRA I, NGUYEN K. Development of UMARC (University of Maryland Advanced Rotor Code)［C］∥The 46th Annual Forum of the American Helicopter Society. Washington D C, 1990：46-1-004.
［10］JOHNSON W. Rotorcraft Aerodynamics Models for a Comprehensive Analysis［C］∥The 54th annual Forum of the American Helicopter Society. Washington D C, 1998：54-00103.
［11］SABERI H, KHOSHLAHJEH M, ORMISTON R A, et al. Overview of RCAS and Application to Advanced Rotorcraft Problems［C］∥American Helicopter Society 4th Decennial Specialists Conference on Aeromechanics. San Francisco, 2004：sm-aeromech-2004-0043.
［12］EPPS J J, CHANDRA R. The Natural Frequencies of Rotating Composite Beams with Tip Sweep［J］. Journal of the American Helicopter Society, 1996, 40(1): 29-36.
［13］JOHNSON W, DATTA A. Requirements for Next Generation Comprehensive Analysis of Rotorcraft［C］∥American Helicopter Society Specialists. San Francisco, 2008：sm-2008-mech-037-Johnson.
［14］TRUONG V K. Dynamics Studies of the ERATO Blade, Based on Finite Element Analysis［C］∥The 31st European Rotorcraft Forum. Florence, 2005：94.
［15］YEO H, TRUONG K V, CHANDRA R. Comparison of One-dimensional and Three-dimensional Structural Dynamics Modeling of Advanced Geometry Blades［J］. Journal of Aircraft, 2014, 51(1): 226-235.
［16］KEE Y J, SHIN S J. Structural Dynamic Modeling for Rotating Blades Using Three Dimensional Finite Elements［J］. Journal of Mechanical Science and Technology, 2015, 29(4): 1607-1618.
［17］FILIPPI M, ZAPPINO E, CARRERA E. Multidimensional Models for Double-Swept Helicopter Blades［J］. AIAA Journal, 2019, 57(6): 2609-2616.
［18］DATTA A, JOHNSON W. Three-dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis［C］∥American Helicopter Society 65th Annual Forum Proceedings, Grapevine, 2009：65-2009-000330.
［19］DATTA A, JOHNSON W. A Multibody Formulation for Three Dimensional Brick Finite Element Based Parallel and Scalable Rotor Dynamic Analysis［C］∥American Helicopter Society 66th Annual Forum, Phoenix, 2010：66-2010-000246.
［20］SRARUK W, CHOPRA I, DATTA A. Three-dimensional CAD-Based Structural Modeling for Next Generation Rotor Dynamic Analysis［C］∥American Helicopter Society 70th Annual Forum. Quebec, 2014：70-2014-0038.
［21］SRARUK W, DATTA A, CHOPRA I, et al. An Integrated Three-dimensional Aeromechanics Analysis of the NASA Tilt Rotor Aeroacoustic Model［J］. Journal of the American Helicopter Society, 2018, 63(3): 1-12.
［22］杨卫东, 张呈林, 王适存. 后掠桨尖旋翼气弹响应及载荷分析［J］. 南京航空航天大学学报, 1998 , 30 (1): 52-58.
YANG Weidong, ZHANG Chenglin, WANG Shicun. Response and Loads Analysis of Helicopter Rotor Blades with Swept Tips［J］. Journal of Nanjing University of Aeronautics and Astronautics, 1998, 30 (1): 52-58.
［23］王俊毅, 招启军, 肖宇. 基于CFD/CSD耦合方法的新型桨尖旋翼气动弹性载荷计算［J］. 航空学报, 2014, 35(9): 2426-2437.
WANG Junyi, ZHAO Qijun, XIAO Yu. Calculations on Aeroelastic Loads of Rotor with Advanced Blade-tip Based on CFD/CSD Coupling Method［J］. Acta Aeronauticaet Astronautica Sinica, 2014, 35(9): 2426-2437.
［24］马砾, 招启军, 赵蒙蒙，等. 基于CFD/CSD耦合方法的旋翼气动弹性载荷计算分析［J］. 航空学报, 2017, 38(6): 1-14.
MA Li, ZHAO Qijun, ZHAO Mengmeng, WANG Bo. Computation Analyses of Aeroelastic Loads of Rotor Based on CFD/CSD Coupling Method［J］. Acta Aeronauticaet Astronautica Sinica, 2017, 38(6): 1-14.
［25］DATTA A,NIXON M, CHOPRA I. Review of Rotor Loads Prediction with the Emergence of Rotorcraft CFD［J］. Journal of the American Helicopter Society. 2007, 52 (4): 287-317.
［26］DATTA A, CHOPRA I. Prediction of UH-60 Main Rotor Structural Loads Using CFD/Comprehensive Analysis Coupling［J］. Journal of the American Helicopter Society， 2008, 53 (4): 351-365.
［27］DATTA A. X3D—a 3D Solid Finite Element Multibody Dynamic Analysis for Rotorcraft［C］∥American Helicopter Society Technical Meeting on Aeromechanics Design for Vertical Lift. San Francisco, 2016: 20-22.
［28］PATIL M, ARIAS P, BAEDER J, et al. An Integrated Three-dimensional Aeromechanical Analysis of Lift Offset Coaxial Rotors［C］∥The Vertical Flight Societys 78th Annual Forum. Fort Worth, 2022：F-0078-2022-17518.
［29］BABUSKA I, SURI M. On Locking and Robustness in the Finite Element Method［J］. SIAM Journal on Numerical Analysis, 1992, 29(5): 1261-1293.
［30］BATHE K J. Finite Element Procedures［M］. Watertown：Prentice-Hall, Pearson Education, Inc., 2006.
［31］BLACKER T D, OWEN S J, STATEN M L, et al. CUBIT Geometry and Mesh Generation Toolkit 15.2 User Documentation［M］. Albuquerque：Sandia National Laboratories, 2016.
［32］CHI C, DATTA A, CHOPRA I, et al. Three-dimensional Strains on Twisted and Swept Composite Rotor Blades in Vacuum［J］. Journal of Aircraft, 2021, 58(1): 1-16.

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