Abstract:
In order to guide the structural integration research on composite propeller, a series of issues related to layup design, damping property, structural deformation and hydrodynamic response of such components were discussed in this article, which could promote the utilization of hybrid fiber during the development of high damping and high performance blades. Firstly, the damping and mechanical tests were conducted concerning with three kinds of fiber reinforced materials which are commonly used in engineering. By taking into account the practical loading characteristics, six different fiber layup schemes for propeller were proposed, and the elaborate finite element models were established. Secondly, the modal and vibration analysis on composite blade were carried out through numerical simulation approach, and then the structural damping ratio of blade components with different fiber angles and material categories were investigated based on the strain energy theory. According to this evaluation, two kinds of layup design schemes with hybrid carbon fiber (CF)/ Kevlar fiber (KF) were picked up because of their good damping property. Finally, the fluid-solid coupling analysis on these two hybrid composite propellers was conducted to discuss the influence of fiber hybridization on their structural deformation and hydrodynamic performance. These can provide effective support for optimization design and further promotion or application of composite propeller.