风电叶片单/双轴测试及其全场三维变形分析

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (9): 39-46.

风电叶片单/双轴测试及其全场三维变形分析

胡雪兵¹, 周华飞^2*, 汪小平¹, 秦良忠²

1.江西理工大学建筑与测绘工程学院,赣州 341000;
2.温州大学建筑工程学院,温州 325035

收稿日期:2015-04-28 出版日期:2015-09-28 发布日期:2021-09-14
通讯作者: 周华飞(1978-),男,博士,教授,主要从事结构健康监测方面的研究,mailtofei@wzu.edu.cn。
作者简介:胡雪兵(1989-),男,硕士研究生,主要从事复合材料性能测试。
基金资助:
国家自然科学基金(51208384);浙江省自然科学基金(LY12E08009);浙江省钱江人才计划(2012R10071)

UNIAXIAL AND BIAXIAL TEST AND FULL-FIELD 3D DEFORMATION ANALYSIS FOR A WIND TURBINE BLADE

HU Xue-bing¹, ZHOU Hua-fei^2*, WANG Xiao-ping¹, QIN Liang-zhong²

1. School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. College of Civil Engineering and Architecture, Wenzhou University, Wenzhou 325035, China

Received:2015-04-28 Online:2015-09-28 Published:2021-09-14

摘要/Abstract

摘要： 进行了风电叶片单/双轴静载试验,采用数字图像相关技术监测其全场三维变形。结果表明,在各荷载工况下,风电叶片的三维位移分布具有良好规律,应变分布则无明显规律。在三个方向位移中,平面外位移远大于平面内位移。单/双轴荷载作用下,风电叶片三维位移存在显著差异,且位移差值随加载等级增大而增大。在风电叶片全场范围内,双轴荷载作用下的挥舞方向位移大于同级单轴荷载作用下的挥舞方向位移。在叶根至74%叶长(100cm)区段内,双轴荷载作用下的摆振方向位移大于同级单轴荷载作用下的摆振方向位移;而在74%叶长至叶尖区段内,则反之。在叶根至41%叶长(55cm)区域内,单双轴各工况下的展向位移几乎接近于0;而在41%叶长至叶尖区域内,双轴荷载作用下的展向位移大于同级单轴荷载作用下的展向位移。

关键词: 风电叶片, 数字图像相关, 静载, 全场, 三维变形

Abstract: A wind turbine blade was tested for the full-field 3D deformations under uniaxial and biaxial static loads by making use of digital image correlation technique. The results showed that the 3D displacements of the wind turbine blade are well distributed while the strains are not. Among the three displacements, the out-of-plane displacement is much larger than the in-plane displacement. The 3D displacements of the wind turbine blade induced by the biaxial loads differ significantly from their counterparts induced by uniaxial loads, and the differences increase as the load increases. In the full field of the wind turbine blade, the flapwise displacements under biaxial loading are greater than that under uniaxial loading of the same level. From the root up to 74% of the blade length (100cm), the edgewise displacements under dual-axis loading are larger than those under single-axis loading, while it is contrary in the rest part of the blade. The spanwise displacements generated by uniaxial and biaxial loading are almost 0 in the region of 0~41% of the blade length. In the rest region of the blade, the spanwise displacements under biaxial loading are greater than that under uniaxial loading of the same level.

Key words: wind turbine blade, digital image correlation, static load, full-field, 3D deformation

中图分类号:

TB332
TK83

胡雪兵, 周华飞, 汪小平, 秦良忠. 风电叶片单/双轴测试及其全场三维变形分析[J]. 复合材料科学与工程, 2015, 0(9): 39-46.

HU Xue-bing, ZHOU Hua-fei, WANG Xiao-ping, QIN Liang-zhong. UNIAXIAL AND BIAXIAL TEST AND FULL-FIELD 3D DEFORMATION ANALYSIS FOR A WIND TURBINE BLADE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(9): 39-46.

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