摘要
风力机叶片主梁作为整个叶片主要承载力的结构,其铺层也比较较厚,在生产过程中因为杂质或铺层松动等原因会产生褶皱,褶皱的产生将会对叶片的运行带来疲劳破坏,从而使叶片的寿命降低,增加风电场的运行成本。本文根据主梁的制作要求,制作不同褶皱高宽比的试件,通过疲劳试验分析不同褶皱高宽比对风力机叶片主梁复合材料疲劳性能的影响。研究结果表明,随着褶皱高宽比的增加,复合材料试件的疲劳寿命下降明显。此外,当高宽比大于一定值时,静力学强度和疲劳寿命下降趋势加剧。
As the main bearing capacity structure of the whole blade,the main beam of wind turbine blade has a thick layer,and the beam is folded in the production process due to impurities or loose layers,which will bring fatigue damage to the operation of the blade,reduce the life of the blade and increase the operation cost of the wind farm.In this paper,according to the manufacturing requirements of main beam,specimens with different aspect ratio for fold are made.Through fatigue test,the influence of the fold different aspect ratio on fatigue performance of the main beam composite material is analyzed.The results show that the fatigue life of composite specimens decreases obviously with the increase of aspect ratio.In addition,when the aspect ratio is larger than a certain value,statics strength and fatigue life tend to decline more.
作者
沈臣
周勃
李菲
张雪岩
SHEN Chen;ZHOU Bo;LI Fei;ZHANG Xue-Yan(School of mechanical engineering,Shenyang University of Technology,Shenyanyigg 110870,China;School of architecture&civil engineering,Shenyang University of Technology,Shenyang 110870,China)
出处
《重型机械》
2022年第1期36-39,共4页
Heavy Machinery
基金
国家自然科学基金项目(52175105)。
关键词
风力机叶片
复合材料
褶皱
寿命预测
wind turbine blade
composite materials
fold
life prediction
