GFRP材料对微水头水车叶片结构性能的影响  

Effect of GFRP material on structural performance of micro head waterwheel blades

作　　者：陈小翠[1] 崔煜崑 郑源[1] 米渊 CHEN Xiaocui;CUI Yukun;ZHENG Yuan;MI Yuan(College of Energy and Electrical Engineering,Hohai University,Nanjing,Jiangsu 210098,China;POWERCHINA Shanghai Electric Power Engineering Co.,Ltd.,Shanghai 200025,China)

机构地区：[1]河海大学电气与动力工程学院,江苏南京210098 [2]上海电力设计院有限公司,上海200025

出　　处：《排灌机械工程学报》2025年第3期308-315,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(52271275)。

摘　　要：在单向流固耦合的理论基础上,通过模拟叶片在不同旋转角度下所承受的流体压力,将得出的流体压力数据作为结构分析的边界条件,输入到有限元分析模型进行分析.考虑环氧S玻璃纤维和环氧E玻璃纤维的复合材料,将两种复合材料进行水车叶片结构设计,探究复合材料中不同铺层角度对水车力学性能的影响,以得出最佳铺层方案,并将复合材料叶片的结构分析结果与实体结构叶片的结果进行对比.结果表明,应用环氧E玻璃纤维材料并采用铺层角度θ为15°的铺层方案对微水头水车叶片结构性能的改善最显著;在相同工况下相比于实体钢叶片,复合材料叶片的最大变形量比结构钢叶片减少了53.4%,有效缓解了应力集中的现象,同时,复合材料叶片的质量也大幅减轻,达到了80.7%的减重效果,为微水头水车叶片的安全稳定运行提供了理论依据.According to the theory of unidirectional fluid structure coupling,the fluid pressure data,derived from simulations of the fluid pressure experienced by the blade at different rotation angles,were utilized as the boundary condition for structural analysis and subsequently incorporated into the finite element analysis model for further examination.The structural design of waterwheel blades was conducted using epoxy S-glass fiber and epoxy E-glass fiber materials.The influence of different layer laying angles in the composite materials on the mechanical properties of waterwheels was explored,aiming to determine the optimal layering scheme.Furthermore,the structural analysis results of the composite blades were compared with those of blades with a solid structure.The results indicate that the application of epoxy E-glass fiber material,combined with a layer stacking scheme with a layer laying angle θ=15°,has the most significant improvement in the structural performance of micro head waterwheel blades.In comparison to solid steel blades under the same operating conditions,the maximum deformation of composite blades is reduced by 53.4%,thereby effectively alleviating the phenomenon of stress concentration.Additionally,the mass of composite blades is greatly reduced,achieving a weight reduction effect of 80.7%.These results provide a theoretical basis for the safe and efficient design of micro head waterwheel blades.

关 键 词：微水头水车 叶片 玻璃纤维增强材料 复合材料 铺层角度 力学性能 

分 类 号：TV314[水利工程—水工结构工程] S277.9[农业科学—农业水土工程]