风力机叶片结构强度复合材料力学分析方法研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (5): 16-21.

风力机叶片结构强度复合材料力学分析方法研究

郭小锋, 郭士锐, 杨树峰, 曹衍龙

中原工学院机电学院,郑州450007

收稿日期:2016-11-23 出版日期:2017-05-28 发布日期:2017-05-28
作者简介:郭小锋(1983-),男,博士,讲师,主要从事复合材料结构、风力机叶片设计优化方面的研究,mexf@foxmail.com。
基金资助:
河南省高等学校重点科研项目(16A460041);河南省高等学校现代制造装备与仪器重点学科开放实验室开发课题(2016MEI004)

THE STRUCTURAL ANALYSIS METHOD OF WIND TURBINE BLADE BASED ON MECHANICS OF COMPOSITE MATERIALS

GUO Xiao-feng, GUO Shi-rui, YANG Shu-feng, CAO Yan-long

School of Mechanical Science & Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China

Received:2016-11-23 Online:2017-05-28 Published:2017-05-28

摘要/Abstract

摘要： 截面结构强度分析校核方法是风力机叶片设计优化的关键问题。针对现有的叶片工程力学计算方法精度不高、有限元分析方法计算开销较大的问题,在研究风力机复合材料叶片结构设计模型的基础上,基于复合材料力学理论,推导出计算叶片截面周向各处拉伸和剪切应变的计算公式;在叶片生命周期内的极限载荷下,对某1.5 MW叶片进行了结构强度计算和分析,通过与该叶片在当量极限载荷下的测试结果对比,验证了所述方法的有效性。

关键词: 风力机叶片, 结构模型, 复合材料力学, 结构强度, 理论分析

Abstract: The method of blade section structural analysis is the key to the optimization design of wind turbine blades. In the existing research methods, the engineering mechanics calculation method based on the basic mechanics of materials has a fast computation speed, while its calculation accuracy is restricted for the approximate equivalent of material structures and attributes. Another method is the finite element method. It was widely used in the structural analysis of blade, but for high time-consuming the modeling and calculating, it's not easily used in the optimization design of wind turbine blades. Based on the study of the laminate structure of the blades, the new method and formulas for calculating the tensile and shear stress of blade sections is developed. Taking a 1.5 MW blade as an example, the structural strength of the blade is studied with the ultimate loads of the blade, and compared with the test result. The feasibility of the new method was verified.

Key words: wind turbine blade, structural model, mechanics of composite materials, structural strength, theoretical analysis

中图分类号:

TB332

郭小锋, 郭士锐, 杨树峰, 曹衍龙. 风力机叶片结构强度复合材料力学分析方法研究[J]. 玻璃钢/复合材料, 2017, 0(5): 16-21.

GUO Xiao-feng, GUO Shi-rui, YANG Shu-feng, CAO Yan-long. THE STRUCTURAL ANALYSIS METHOD OF WIND TURBINE BLADE BASED ON MECHANICS OF COMPOSITE MATERIALS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(5): 16-21.

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