复合材料科学与工程Issue(3)：106-114,9.DOI:10.19936/j.cnki.2096-8000.20250328.014
大型复合材料风电叶片吊装过程受力与失效分析
Study on the mechanical behavior and failure analysis of the sandwich shell in FRP wind turbine blade during lifting process
摘要
Abstract
In order to understand the mechanical response of the sandwich shell of wind turbine blade in lifting process using slings and to prevent damage to the sandwich shell caused by stress concentration during lifting,a full-scale wind turbine blade single-point flexible lifting test was conducted.The study investigated changes in displace-ment and the distribution of strains during lifting to determine the lifting failure mode.Based on the test results,the accuracy of two finite element models,namely node-restrained loading and flexible sling loading,was comparatively analyzed.Additionally,parameter analysis was performed to examine key factors influencing flexible lifting.The re-sults indicate that the area of failure during single-point flexible lifting is near the lifting point,consistent with the failure mode under actual lifting conditions.Both node-restrained loading and flexible sling loading can predict over-all displacement distribution quite accurately.However,the skin strain distribution during node-restrained loading differs from that at the lifting point,with significant experimental variations.The results from flexible sling loading are more precise.Parameter analysis revealed that contact stress significantly decreases with increased contact area.Expanding sling width,enhancing the elastic modulus and interface roughness effectively reduce stress concentration at the contact interface.Conversely,the height of sling point has no significant effect on the strain distribution and contact stress.关键词
柔性吊带/风电叶片/夹芯结构/吊装试验/有限元模拟/复合材料Key words
soft lifting sling/wind turbine blade/sandwich structure/lifting test/finite element analysis/composites分类
通用工业技术引用本文复制引用
鲁晓锋,刘宇轩,翟佳琪,张东坡,孟鑫淼,冯鹏..大型复合材料风电叶片吊装过程受力与失效分析[J].复合材料科学与工程,2025,(3):106-114,9.基金项目
中国建材集团攻关专项(2021HX1617) （2021HX1617）
江苏省碳达峰碳中和科技创新专项资金(BE2022008) （BE2022008）
