复合材料螺旋桨扭转变形对推力脉动影响研究

Effects of Composite Propeller Torsional Deformation on Thrust Pulsation

关键词:  复合材料螺旋桨  自迭代算法  扭转变形  螺距角  推力脉动  推力系数差值

Key words:  Composite propeller  Self-iterative algorithm  Torsional deformation  Pitch angle  Thrust pulsation  Deviation value of thrust coefficient

摘要:

为了研究复合材料螺旋桨扭转变形对推力脉动影响，基于面元法和有限元法，采用Fortran和Python语言混合编程开发了求解复合材料螺旋桨稳态流固耦合的自迭代算法，并以某碳纤维桨为对象开展了静态加载变形试验和水动力性能试验，对自迭代算法有限元计算精度和水动力计算精度进行了试验验证。在此基础上，以大侧斜的4383复合材料螺旋桨为研究对象，采用该算法对4383复合材料螺旋桨在设计工况下的螺距角变化量和推力系数差值之间的对应规律进行了研究。结果表明，通过铺层设计能够有效控制复合材料螺旋桨扭转变形的方向和程度，从而有效降低推力脉动。

Abstract:

In order to study the effects of torsional deformation of composite propeller on thrust pulsation， based on the panel method and finite element method， a self-iterative algorithm for solving the steady-state fluid-solid coupling of composite propeller was developed by using Fortran and Python languages. The static loading deformation test and hydrodynamic performance test of a carbon fiber propeller were carried out， and the finite element calculation accuracy and hydrodynamic calculation accuracy of the self-iterative algorithm were verified by experiments. On this basis， the 4383 composite propeller with large skew was taken as the research object， and the corresponding law between the pitch angle variation and D-value of thrust coefficient of the 4383 composite propeller under the design condition was studied by using this algorithm. The results show that the direction and degree of torsional deformation of composite propeller can be effectively controlled by ply design， and therefore effectively reduce the thrust pulsation.