进一步发展和完善叶片部件尺度的测试方法,开展复合材料腹板结构试样在压缩载荷下的实验与数值分析,从内部揭示腹板结构试样的屈曲过程和失效机理。结果表明,复合材料腹板结构具有典型的屈曲特征,在后屈曲阶段,芯材材料屈服压碎导致的试样局部大变形是试件失去主要承载能力的主要原因,而试件制造过程中产生的材料分布不均匀等因素带来的初始缺陷是造成结构响应非线性和试件屈曲失稳的根本原因。
Abstract
This research further develops and improves the test method of blade component size, experimental and numerical researches have been carried out on the composite web component specimens under compressive loads, and reveal the buckling failure mechanism of the web structure sample from the inside. The research reveals that the composite web specimen has typical buckling characteristics. In the post-buckling stage, the large local deformation of the specimen caused by the yield and crushing of the core material is the main reason that the specimen loses its principal load-bearing capacity. The underlying source of nonlinear structural response and buckling instability of the specimen is the initial flaws created by variables such as uneven material distribution during the production process.
关键词
风电叶片 /
三明治结构 /
压缩测试 /
屈曲
Key words
wind turbine blades /
sandwich structures /
compression testing /
buckling
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参考文献
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基金
国家重点研发计划（2018YFB1501201）
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