水力发电2024，Vol.50Issue(1)：71-76,108,7.
塔筒安装条件下法兰盘受力变形分析研究
Study on Stress and Deformation of Flange under Tower Cylinder Installation Conditions
摘要
Abstract
The flange is an important component to connect the tower cylinder of wind turbine.During the overturning lifting process of the tower cylinder the flange and bolt holes are prone to damage and deformation which will lead to bolt connection failure and severely impact the safety and stability of the tower cylinder.Therefore the investigation on the deformation characteristics of flange during lifting conditions becomes crucial.The finite element numerical analysis software is used to analyze the stress and deformation characteristics of flange and bolt holes under lifting conditions.The research results show that (a) during the overturning lifting process of tower cylinder the deformation of bolt holes is maximum when the tower cylinder is in a horizontal state and (b) the maximum deformation of bolt holes decreases with the increase of flange thickness while increases with the increase of wall thickness and length of tower cylinder.Based on the sensitivity analysis a prediction formula for the maximum deformation of bolt holes in the flange based on the nonlinear fitting method is proposed and the average error of the proposed prediction formula is only 6.79％which can provide effective theoretical support for the prediction of maximum deformation of bolt holes under lifting conditions.关键词
塔筒/翻身吊装施工/法兰盘/螺孔变形/数值分析/变形预测公式Key words
tower cylinder/overturning lifting process/flange/bolt hole deformation/numerical analysis/deformation prediction formula分类
建筑与水利引用本文复制引用
龚欢,卫红英,叶兆艺,王欣怡,李小鹏..塔筒安装条件下法兰盘受力变形分析研究[J].水力发电,2024,50(1):71-76,108,7.基金项目
浙江省联合基金重点项目(LHZ22E090002) （LHZ22E090002）
