Strength Evaluation on a Composite Marine Propeller Blade

Published

October 12, 2021

Author(s)

H J. Lin, J J. Lin, Tze-Jer Chuang

Abstract

The strength of a composite propeller blade is evaluated by performing a nonlinear hydro-elastic analysis. The finite element method, lifting surface theory, least square method, equilibrium equation and Hashin failure criteria are employed for the structural analysis, fluid analysis, stress smoothing, three dimensional stress calculation and strength assessment, respectively. Additionally, the strength of the blades with balanced and unbalanced stacking sequences are evaluated and discussed. Five failure modes, fiber tension and compression, matrix tension and compression, and delamination, are considered. The strength was shown to be insufficient for the blades with [ /-452/90/0]s. Meanwhile, the blades with [ /q2/90/0]s and [ /-15/15/90/0]s were shown to have sufficient structural strength. However, attention should be paid to the delamination failure at the leading and trailing edges of the blade.

Citation

Journal of Reinforced Plastics and Composites

Pub Type

Journals

Keywords

composites, nonlinear hydroelastic, propeller blade, stacking sequence, strength

Citation

Lin, H. , Lin, J. and Chuang, T. (2021), Strength Evaluation on a Composite Marine Propeller Blade, Journal of Reinforced Plastics and Composites (Accessed January 2, 2025)