基于ANSYS的10 MW风力机叶片弯扭耦合特性研究
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摘要
为分析弯扭耦合效应对大型风力机叶片气动性能的影响。文中使用三维有限元软件ANSYS建立了10 MW复合材料风力机叶片模型,通过改变梁帽位置单轴向布的铺层角度在叶片中引入弯扭耦合效应,改变铺层角度和耦合区域,分析叶片在气动载荷作用下的变形情况。结果表明:叶片在弯扭耦合作用下产生弯曲变形的同时会发生扭转变形,沿叶片展向变形量增加;该叶片可达到的最大扭转变形量为6度;弯扭耦合系数随着铺层角度的增大而减小。
In order to analyze the effect of bending twist coupling( BTC) on the aerodynamic performance of large scale wind turbine blade,a 10 MW composite wind turbine blade model is established by using the three-dimensional finite element software ANSYS. It is accomplished by introducing an offset angle on the plies of the uni-directional material over the spar caps of the blade. The deformations of blade under aerodynamic loads are analyzed by changing the ply angle and coupling region. Results illustrate that the torsional deformation occurs when the blade bent under BTC,and it increases along the blade orientation; the maximum tip deformation achieved by the blade is 6 degree; the BTC coefficient decrease as the ply angle increase.
In order to analyze the effect of bending twist coupling( BTC) on the aerodynamic performance of large scale wind turbine blade,a 10 MW composite wind turbine blade model is established by using the three-dimensional finite element software ANSYS. It is accomplished by introducing an offset angle on the plies of the uni-directional material over the spar caps of the blade. The deformations of blade under aerodynamic loads are analyzed by changing the ply angle and coupling region. Results illustrate that the torsional deformation occurs when the blade bent under BTC,and it increases along the blade orientation; the maximum tip deformation achieved by the blade is 6 degree; the BTC coefficient decrease as the ply angle increase.
引文
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[6]刘宇航,王渊博,李春,等.应用于气动弹性剪裁的大型风力机叶片弯扭耦合性能研究[J].动力工程学报,2018,38(12):1016-1021.
[7]安利强,周邢银,张颖,等.基于节点位移法的变耦合区域风力机叶片弯扭耦合效应分析[J].科学技术与工程,2018,18(8):209-213.
[8]Chandra R,Stemple A D,Chopra I.Thinwalled composite beams under bending,torsionaland extensional loads[J].Journal of Aircraft,1990,27(7):619-631.
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[10]Smith E C,Chopra I.Formulationand Gaunaa M,Blasques J,Dssing M,Heinen J-J W,Behrens T.Light Rotor:The 10-MW reference wind turbine[A].EWEA 2012-European Wind Energy Conference&Exhibition[C].2012.
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[12]Henriksen L C,Natarajan A,Hansen M H.Description of the DTU 10MW reference wind turbine DTUwind energy report-I-0092[EB/OL].https://dtu-10mw-rwt.vindenergi.dtu.dk.Composite Structure,2018,193:237-246.
[13]Bak C,Bitsche R,Yde A,Heinen J-J W,Behrens T,Kim T,Hansen M H,Zahle F,Gaunaa M,Blasques J,Dssing M,Heinen J-J W,Behrens T.Light Rotor:The 10-MW reference wind turbine[A].EWEA 2012-European Wind Energy Conference&Exhibition[C].2012.
[14]Manolas D I,Pirrung G R,Croce A,Roura M,Riziotis V A,Madsen H A.Cross comparison of aeroelastic state-of-the-art design tools on a 10 MWscale wind turbine[A].EWEC Conference[C].Paris,2015.
[2]Blasques J P.User’s manual for BECAS a cross section tool for anisotropic and inhomogeneus beam sections of arbitrary geometry[EB/OL].http://www.becas.dtu.dk.
[3]Bagherpour T,Li X M,Manolas D I,Riziotis V A.Modeling of material bend-twist coupling on wind turbine blades[J].
[4]Fedorov V,Berggreen C.Bend-twist coupling potential of wind turbine blades[A].The science of making torque from wind 2014[C],Copenhagen,Denmark,18-20 June 2014.
[5]Meng H,Lien F S,Glinka G,Geiger P.Study on fatigue life of bend-twist coupling wind turbine blade based on anisotropic beam model and stress-based fatigue analysis method[J].Composite Structure,2018,208:678-701.
[6]刘宇航,王渊博,李春,等.应用于气动弹性剪裁的大型风力机叶片弯扭耦合性能研究[J].动力工程学报,2018,38(12):1016-1021.
[7]安利强,周邢银,张颖,等.基于节点位移法的变耦合区域风力机叶片弯扭耦合效应分析[J].科学技术与工程,2018,18(8):209-213.
[8]Chandra R,Stemple A D,Chopra I.Thinwalled composite beams under bending,torsionaland extensional loads[J].Journal of Aircraft,1990,27(7):619-631.
[9]Stablein A,Hansen M H.Timoshenko beam element with anisotropic cross-sectional properties[A].Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering[C].Crete Island,Greece,5-10 June 2016.
[10]Smith E C,Chopra I.Formulationand Gaunaa M,Blasques J,Dssing M,Heinen J-J W,Behrens T.Light Rotor:The 10-MW reference wind turbine[A].EWEA 2012-European Wind Energy Conference&Exhibition[C].2012.
[11]Bak C,Zahle F,Bitsche R,Kim T,Yde A.
[12]Henriksen L C,Natarajan A,Hansen M H.Description of the DTU 10MW reference wind turbine DTUwind energy report-I-0092[EB/OL].https://dtu-10mw-rwt.vindenergi.dtu.dk.Composite Structure,2018,193:237-246.
[13]Bak C,Bitsche R,Yde A,Heinen J-J W,Behrens T,Kim T,Hansen M H,Zahle F,Gaunaa M,Blasques J,Dssing M,Heinen J-J W,Behrens T.Light Rotor:The 10-MW reference wind turbine[A].EWEA 2012-European Wind Energy Conference&Exhibition[C].2012.
[14]Manolas D I,Pirrung G R,Croce A,Roura M,Riziotis V A,Madsen H A.Cross comparison of aeroelastic state-of-the-art design tools on a 10 MWscale wind turbine[A].EWEC Conference[C].Paris,2015.