吊装状态下风机叶片受力特性数值模拟研究
Numerical Simulation on the Mechanical Characteristics of Fan Blades Under Lifting Condition
龚欢 1叶兆艺 2卫洪英 1李小鹏3
作者信息
- 1. 中国电建集团华东勘测设计研究院有限公司,杭州 311122;浙江华东工程咨询有限公司,杭州 311100
- 2. 浙江大学港口海岸与近海工程研究所,杭州 310058
- 3. 锡林浩特市泰富风力发电有限公司,内蒙古 锡林浩特市 026099
- 折叠
摘要
风机叶片吊装施工是风力工程的重要组成部分,叶片在施工过程中容易发生局部变形导致壳体损伤破坏.因此,开展吊装过程中的叶片受力特征研究具有重要意义.本文采用ABAQUS有限元数值方法,建立风机叶片三维有限元模型,研究不同吊点位置下叶片受力变形特征,结果表明:(1)叶片后缘相比前缘承担更大的应力,最大等效应力约为前缘的1.36倍.(2)在0～60 m范围内,叶片后缘压缩和拉伸均有发生,在60.0～111.9 m范围内叶片后缘处于受拉状态.(3)随着吊点比例的增大,叶片最大应力先减小后增大,吊点比例为0.7时,该工况下叶片所受的最大应力最小.
Abstract
The hoisting construction of wind turbine blades is an important part of wind engineering,and the blades are prone to local deformation during construction,leading to damage and destruction of the shell.Therefore,it is of great significance to carry out the research on blade stress characteristics during lifting.Using the ABAQUS finite ele-ment numerical method,a three-dimensional finite element model of a fan blade was established to study the stress and deformation characteristics of the blade at different lifting points.The results showed that:(1)the trailing edge of the blade bears greater stress than the leading edge,with a maximum equivalent effective force of 1.36 times that of the leading edge.(2)both compression and tension occur at the trailing edge of the blade within the range of 0-60 m,and the blade at the trailing edge is in a tensile state within the range of 60.0-111.9 m.(3)as the lifting point ratio increases,the maximum stress on the blade decreases first and then increases.When the lifting point ratio is 0.7,the maximum stress on the blade under this working condition is the smallest.
关键词
叶片吊装/数值模拟/受力分析/变形分析/吊装工艺Key words
blade hoisting/numerical simulation/force analysis/deformation analysis/lifting technics引用本文复制引用
基金项目
浙江省联合基金重点项目(LHZ22E090002)
出版年
2024
NETL
NSTL
万方数据