Scholarlink

<p>In order to study the strength characteristics of carbon-glass hybrid fiber reinforced composite wind turbine blades under extreme conditions. This study adopts a combination of finite element simulation and experimental methods, taking 1.5&#xa0;MW wind turbine blades as the object, selecting reinforcement materials with carbon/glass fiber mixing ratios of 2:6, 4:4, and 6:2, exploring the strength response of blades under the coupling of temperature-mixing ratio-wind speed, and analyze the effects of temperature and wind speed on blade fatigue life. The results showed that at a temperature of 45 ℃, 25 ℃, and -35℃, the tensile strength of the mixed blade specimen is 44.7%, 41.5%, and 33.5% higher than that of the glass fiber sample, respectively. At a wind speed of 12&#xa0;m/s and 25℃, the maximum stress of the blade decreases with the increase of carbon fiber(19.9 ~ 44&#xa0;MPa); At a wind speed of 30&#xa0;m/s and 25℃, the maximum stress of each type of blade (199 ~ 283&#xa0;MPa) did not exceed the specimen tensile strength (351 ~ 515&#xa0;MPa); At -35 ℃ and rated wind speed, the maximum stress of the blade significantly increased (286 ~ 384&#xa0;MPa). At -35 ℃ and a wind speed of 30&#xa0;m/s, the root of the blade is the key area of stress concentration, and the maximum stress increase to 584&#xa0;MPa. Extreme wind speed and -35 ℃ low temperature respectively reduced the fatigue life of the blades by 92.6% and 97.8% compared to the rated working conditions. This study provides key technical support for the selection, and life prediction of blades in extreme environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Strength behaviour of carbon/glass hybrid wind turbine blades under extreme operating conditions

  • 期刊论文

  • 发表日期：

    2026年3月7日

查看全文
  • Xin Jiang,
  • Guoyu Wang,
  • Mingze Gao,
  • Peiyong Ren,
  • Ziyu Wang,
  • Ruofan Sun

摘要

In order to study the strength characteristics of carbon-glass hybrid fiber reinforced composite wind turbine blades under extreme conditions. This study adopts a combination of finite element simulation and experimental methods, taking 1.5 MW wind turbine blades as the object, selecting reinforcement materials with carbon/glass fiber mixing ratios of 2:6, 4:4, and 6:2, exploring the strength response of blades under the coupling of temperature-mixing ratio-wind speed, and analyze the effects of temperature and wind speed on blade fatigue life. The results showed that at a temperature of 45 ℃, 25 ℃, and -35℃, the tensile strength of the mixed blade specimen is 44.7%, 41.5%, and 33.5% higher than that of the glass fiber sample, respectively. At a wind speed of 12 m/s and 25℃, the maximum stress of the blade decreases with the increase of carbon fiber(19.9 ~ 44 MPa); At a wind speed of 30 m/s and 25℃, the maximum stress of each type of blade (199 ~ 283 MPa) did not exceed the specimen tensile strength (351 ~ 515 MPa); At -35 ℃ and rated wind speed, the maximum stress of the blade significantly increased (286 ~ 384 MPa). At -35 ℃ and a wind speed of 30 m/s, the root of the blade is the key area of stress concentration, and the maximum stress increase to 584 MPa. Extreme wind speed and -35 ℃ low temperature respectively reduced the fatigue life of the blades by 92.6% and 97.8% compared to the rated working conditions. This study provides key technical support for the selection, and life prediction of blades in extreme environments.