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Z-pin增强复合材料开孔层合板压缩性能

孙一凡 李勇 还大军 刘洪全 杨潇

孙一凡, 李勇, 还大军, 刘洪全, 杨潇. Z-pin增强复合材料开孔层合板压缩性能[J]. 航空动力学报, 2019, 34(4): 885-893. doi: 10.13224/j.cnki.jasp.2019.04.018
引用本文: 孙一凡, 李勇, 还大军, 刘洪全, 杨潇. Z-pin增强复合材料开孔层合板压缩性能[J]. 航空动力学报, 2019, 34(4): 885-893. doi: 10.13224/j.cnki.jasp.2019.04.018
Compression performance of open-hole composite laminates reinforced by Z-pin[J]. Journal of Aerospace Power, 2019, 34(4): 885-893. doi: 10.13224/j.cnki.jasp.2019.04.018
Citation: Compression performance of open-hole composite laminates reinforced by Z-pin[J]. Journal of Aerospace Power, 2019, 34(4): 885-893. doi: 10.13224/j.cnki.jasp.2019.04.018

Z-pin增强复合材料开孔层合板压缩性能

doi: 10.13224/j.cnki.jasp.2019.04.018
基金项目: 装备预研共用技术项目(41422020110)

Compression performance of open-hole composite laminates reinforced by Z-pin

  • 摘要: 针对复合材料开孔层合板孔边应力集中而导致承载能力降低现象,采用Z-pin增强技术提高性能。重点了研究开孔层合板的压缩性能,制备了不同Z-pin植入体积分数的开孔层合板试样并进行了压缩试验,在试验基础上,应用有限元分析方法对Z-pin增强开孔层合板进行建模分析,基于渐进损伤分析法和内聚单元法模拟了复合材料基体以及Z-pin的增强效果。试验结果表明:Z-pin的植入可以显著提高开孔层合板的抗压性能,且随着Z-pin植入体积分数的提高,压缩性能不断上升,压缩强度最高可以提高23.06%;只有沿载荷方向,位于开孔两侧的Z-pin可以提高结构的承载能力;在Z-pin桥联力的作用下,降低了损伤的扩展速度,但并没有改变层合板的最终失效模式。模拟结果表明:压缩损伤从孔边向两侧扩展,位于层合板中心的铺层最先出现损伤,其中第6层与第10层的增强单元最先发生破坏。模拟计算结果与试验结果得到了较好的吻合,该有限元模型对于Z-pin增强复合材料开孔层合板的适用性得到了验证。

     

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出版历程
  • 收稿日期:  2018-08-20
  • 刊出日期:  2019-04-28

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