弯曲复合材料层合板雷击损伤影响分析
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V258;TB330

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中央高校基本科研业务费项目中国民航大学专项资助(3122022064)


Effects on Lightning Damage of Bending Composite Laminates based on Electrothermal Coupled Finite Element Analysis Model
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    摘要:

    复合材料已在民航客机上得到广泛的应用,但由于导电性、导热性较低等原因,致使在雷击附着后出现较大范围的烧蚀损伤,威胁民航客机的运行安全。为了能够更安全地让复合材料应用于民航客机上,研究民机常用弯曲复合材料雷击防护特性,建立弯曲复合材料雷击损伤电热耦合有限元模型,并研究不同因素对弯曲层合板雷击损伤性能影响。结果表明,弯曲层合板相比于未弯曲的层合板,由于热导率的影响,致使其在50kA峰值雷击电流作用下,烧蚀面积增加了1.5倍,深度扩大至第六层,最小层的损伤面积增加了10.67倍;此外,雷击电流峰值、弯曲角度对雷击损伤结果影响较大,而长宽比、纤维铺层方向、厚度由于弯曲层合板电势、热导率的影响致使其影响程度较小,此与未弯曲层合板的雷击影响因素影响特点具有较大的差异性。

    Abstract:

    Composite materials have been widely used in civil aviation aircraft, but due to low electrical conductivity and thermal conductivity, a wide range of ablation damage occurs after lightning strikes, threatening the operation safety of civil aviation passenger aircraft. In order to make composite materials more safely used in civil aviation aircraft, the lightning strike protection characteristics of commonly used curved composite materials in civil aircraft were studied, an electrothermal coupled finite element model of lightning strike damage of curved composite materials was established, and the influence of different factors on the lightning strike damage performance of curved laminates was studied. It was found that the ablation area of the bent laminate was increased by 1.51 times under the action of the peak lightning current of 50 kA due to the influence of thermal conductivity, and the depth expanded to the sixth layer, and the minimum layer was The damage area increased by 10.67 times; in addition, the peak value of the lightning strike current and the bending angle have a greater impact on the lightning strike damage results, while the aspect ratio, the direction of fiber layup, and the thickness are more affected by the potential and thermal conductivity of the bent laminate. It is quite different from the influence characteristics of lightning strike factors of uncurved laminates.

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单泽众,杨霄,马凯,等. 弯曲复合材料层合板雷击损伤影响分析[J]. 科学技术与工程, 2023, 23(30): 13179-13186.
Shan Zezhong, Yang Xiao, Ma Kai, et al. Effects on Lightning Damage of Bending Composite Laminates based on Electrothermal Coupled Finite Element Analysis Model[J]. Science Technology and Engineering,2023,23(30):13179-13186.

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  • 收稿日期:2022-09-27
  • 最后修改日期:2023-10-17
  • 录用日期:2022-12-02
  • 在线发布日期: 2023-11-15
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