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Study on the wind-induced fatigue of heliostat based on the joint distribution of wind speed and direction

机译：基于风速和方向的关节分布的光导疲劳研究

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摘要

Heliostats are a kind of reflection devices in solar power tower plants, and are generally arranged in flat and open areas, with independent column structure. Because the angle needs to be adjusted continuously during the use, heliostats are subject to large wind load and their support structure is prone to wind-induced fatigue. In this work, a joint distribution model was established according to the law of heliostat tracking the sun and combining with the data on wind direction and wind speed at the local meteorological station. The mixed uniform design method was used to design the research conditions, and Ansys Workbench and nCode Design Life software were coupled to combine the finite element analysis with the wind tunnel test of the heliostat structure, so as to analyze the wind-induced fatigue of the heliostat support structure. The GBDT algorithm was adopted to fit the fatigue life in typical working condition, estimate its fatigue life and analyze the law. In this work, the fatigue analysis of the heliostat support structure was conducted through a combination of mixed uniform design and finite element analysis, so as to reduce the test conditions, improve the test efficiency and estimate the fatigue life, and provide a basis for engineering design.
机译：Heliostats是太阳能塔架植物中的一种反射装置，通常布置在平坦和开放的区域，具有独立的柱结构。由于在使用过程中需要连续调节角度，因此Heliostats受到大风力载荷的影响，并且它们的支撑结构容易发生风引起的疲劳。在这项工作中，根据Heliostat的定律跟踪太阳并与当地气象站的风向和风速结合的数据建立了联合分配模型。混合均匀设计方法用于设计研究条件，ANSYS工作台和Ncode设计寿命软件耦合以将有限元分析与光静电结构的风洞试验相结合，以分析风引起的疲劳Heliostat支持结构。采用GBDT算法在典型的工作条件下拟合疲劳寿命，估计其疲劳生活并分析法律。在这项工作中，通过混合均匀设计和有限元分析的组合进行了光晕支持结构的疲劳分析，从而降低了测试条件，提高了测试效率并估计了疲劳寿命，并为工程提供了基础设计。

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  • 来源
    《Solar Energy》 |2020年第9期|668-682|共15页
  • 作者

    Luo H.; Li Z.; Xiong Q.; Jiang Anmin;

  • 作者单位

    Hunan Univ Key Lab Bldg Safety & Efficiency Minist Educ Changsha 410082 Hunan Peoples R China|Hunan Univ Coll Civil Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Key Lab Bldg Safety & Efficiency Minist Educ Changsha 410082 Hunan Peoples R China|Hunan Univ Coll Civil Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Key Lab Bldg Safety & Efficiency Minist Educ Changsha 410082 Hunan Peoples R China|Hunan Univ Coll Civil Engn Changsha 410082 Hunan Peoples R China;

    Hunan Urban Construct Coll Xiangtan 411100 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Heliostat structure; Wind-induced fatigue; Joint distribution; Mixed uniform design method; Fatigue analysis;

    机译：Heliostat结构;风诱导的疲劳;关节分布;混合均匀设计方法;疲劳分析;

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