复合材料螺旋桨敞水性能与结构特性研究

In view of the significant fluid-structure interaction of the composite propeller, the fluid-structure coupling method was established in this paper, with the hydrodynamic load on composite propellers calculated by CFD and the structural response of composite blades predicted via the finite element method. The hydrodynamic performance and structural characteristics of rigid and composite propellers under different advance speed coefficients were studied. The results show that the pitch angle of the composite propeller can adaptively match with the angle of attack, resulting in the propulsion efficiency increase and power loss reduction. The maximum total deformation and equivalent stress of the composite blades decrease with the increase of the incoming flow speed, and increase with the increase of the rotation speed. Based on the Tsai-Wu criterion, the Tsai-Wu coefficient decreases with the increase of the advance speed coefficient, and the failure area is more likely to appear on the tip of the blades.