基于ABAQUS的复合材料垂直轴潮流能叶片有限元建模与分析

Finite element modeling and analysis of vertical axis composite tidal current energy blade based on ABAQUS

为了探究复合材料铺层结构对潮流能叶片力学结构特性的影响,选择纤维增强复合材料进行潮流能叶片的设计研究,旨在设计出结构性能更加优越的潮流能复合材料叶片.为潮流能叶片设计了2种不同形式的复合材料铺层结构方案,一种方案叶片前缘铺层纤维不连续,另一种方案保证叶片前缘的铺层纤维连续;并利用ABAQUS软件建立其有限元模型,分别对潮流能叶片在额定流速工况和极限流速工况下2种铺层结构方案叶片的力学结构特性进行数值模拟仿真分析,探究2种铺层方案对叶片结构性能的影响.结果表明,叶片前缘铺层纤维的连续性可以提高叶片前缘的抗冲击性,从而有效地避免工作中叶片前缘铺层失效的情况,而且可以显著提高复合材料叶片的强度和刚度.研究成果可为以后潮流能叶片及同类型复合材料叶片的研制提供技术参考.

In order to explore the influence of composite laminate structure on the mechanical structures characteristics of tidal current energy blades,the fiber-reinforced composite was selected to design the tidal current energy blades to get a kind of composite tidal current energy blade with better structure and performance.Two different composite lamination schemes were designed for tidal current energy blades and the finite element model was established by ABAQUS.In one scheme,the laminated fibers at the leading edge of the blade were discontinuous,and in the other scheme,the laminated fibers at the leading edge of the blade were continuous.The mechanical structure characteristics of the two layered structure schemes of the tidal current energy blade under the normal working condition and the extreme working condition were numerically simulated and analyzed to explore the influence of the two layered schemes on the structural performance of the blades.The results show that the continuity of blade leading edge ply fiber can improve the impact resistance of blade leading edge and effectively avoid the failure of blade leading edge ply in operation.Moreover,the strength and stiffness of compo-site blades can be significantly improved.The results can give a technical suggestion for the development of tidal current energy blades in the future.