利用层合单元的复合材料涡轮叶片结构设计  

Structure design of composite-material turbine blade by method of laminated element

作　　者：李芳[1] 王大政[2] 

机构地区：[1]浙江工业大学机械工程学院,杭州310014 [2]哈尔滨工业大学(威海)船舶工程学院,山东威海264209

出　　处：《水力发电学报》2015年第9期114-118,共5页Journal of Hydroelectric Engineering

基　　金：国家海洋局基金(GHME2011GD01)

摘　　要：复合材料涡轮叶片是潮流发电机的关键部件之一,其结构形式的选择显得尤为重要。基于ANSYS程序,编制APDL语言。通过自上而下的建模方式构造有限元模型,生成规则有序的层合单元,以确保各单元坐标系的协调一致,进而确保叶片材料主方向的协调一致。分析叶片的强度和刚度,以确定叶片铺层的厚度、层数及其纤维的铺设方向。对相应结构的叶片进行模态分析,以校核叶片是否产生共振。计算结果表明该方法有效而实用,为今后复合材料叶片的结构设计提供了参考。Turbine blade of composite material is one of the key components of a tidal stream turbine, and the choice of its structural form is particularly important to blade safety. This paper presents a finite element model that generates regular laminated elements in a top-down procedure to simulate the blades of composite material This method insures the elements consistent in their local coordinate systems and subsequently leads to consistent principle directions of the composite material of a blade. To implement the model, a set of APDL commands are coded on the basis of ANSYS software. We calculated the strength and stiffness of blade to confirm the thickness of blade layer, the number of layers, and the ply stacking direction of fibers. The model analysis of blade can be applied to blade resonance checking. The results indicate that our approach is effective and applicable and provides a reference for structure design of composite-material blade.

关 键 词：有限元法 层合单元 复合材料 叶片 单元坐标系 

分 类 号：TK7[动力工程及工程热物理—流体机械及工程] TB332[一般工业技术—材料科学与工程]