复合材料螺旋桨敞水性能与结构特性研究张丹丹1，张晶2，刘影1，吴钦1，黄彪1，王国玉1（1.北京理工大学机械与车辆学院，北京100081；2.北京宇航系统工程研究所，北京100076）摘要：针对复合材料螺旋桨流固耦合效应显著的特点，本文通过CFD计算复合材料螺旋桨所受水动力载荷，应用有限元方法计算复合材料桨叶结构响应，建立双向流固耦合数值计算方法，研究不同进速系数工况下刚性和复合材料螺旋桨的水动力性能与结构特性。研究结果表明：相较于刚性螺旋桨，复合材料螺旋桨通过弯扭耦合变形实现螺距角与攻角自适应匹配，进而提高推进效率并降低功率损耗；复合材料桨叶的最大总变形和最大等效应力随来流速度的增大而减小，随旋转速度的增大而增大。基于蔡-吴准则对复合材料螺旋桨的失效行为进行判断，蔡-吴失效系数随进速系数的增大而降低，失效区域更容易出现在桨叶叶梢处。关键词：螺旋桨；CFD；流固耦合；复合材料；水动力性能；结构特性中图分类号：TV131.2文献标识码：Adoi:10.3969/j.issn.1007-7294.2023.02.002NumericalinvestigationonopenwaterperformenceandstructuralcharacteristicsofcompositepropellersZHANGDan-dan1,ZHANGJing2,LIUYing1,WUQin1,HUANGBiao1,WANGGuo-yu1(1.SchoolofMechanicalEngineering,BeijingInstituteofTechnology,Beijing100081,China;2.BeijingInstituteofAerospaceSystemsEngineering,Beijing100076,China)Abstract:Inviewofthesignificantfluid-structureinteractionofthecompositepropeller,thefluid-structurecouplingmethodwasestablishedinthispaper,withthehydrodynamicloadoncompositepropellerscalculat⁃edbyCFDandthestructuralresponseofcompositebladespredictedviathefiniteelementmethod.Thehy⁃drodynamicperformanceandstructuralcharacteristicsofrigidandcompositepropellersunderdifferentad⁃vancespeedcoefficientswerestudied.Theresultsshowthatthepitchangleofthecompositepropellercanadaptivelymatchwiththeangleofattack,resultinginthepropulsionefficiencyincreaseandpowerlossre⁃duction.Themaximumtotaldeformationandequivalentstressofthecompositebladesdecreasewiththein⁃creaseoftheincomingflowspeed,andincreasewiththeincreaseoftherotationspeed.BasedontheTsai-Wucriterion,theTsai-Wucoefficientdecreaseswiththeincreaseoftheadvancespeedcoefficient,andthefail...
